KR20210023955A - Portable air caring apparatus - Google Patents

Abstract

A portable air purifier is disclosed. The disclosed invention comprises: a case having an inner storage space and having one side and the other side of a storage space in a horizontal direction which are opened; a fan assembly stored in the storage space and having a blower fan; a filter stored in the storage space and disposed on a rear side of the fan assembly; a battery stored in the storage space and disposed in a lower portion of the fan assembly and a filter unit; a sensor module stored in the storage space and disposed in the lower portion of the fan assembly and the filter unit to be coupled to the battery; and a mounting unit provided to the battery to restrain a coupling position between the sensor module and the battery.

Description

Portable air purifier {PORTABLE AIR CARING APPARATUS}

The present invention relates to a portable air purifier, and more particularly, to a portable and usable portable air purifier.

An air purifier is a device widely used in modern life, and is a device that purifies the air by filtering out physical particles such as dust, fine dust, and ultrafine dust, chemical substances such as odor particles, and harmful gases, and microorganisms such as bacteria and viruses. .

Air purifiers are becoming indispensable devices even in general homes due to the influence of urbanization, industrialization, and internationalization. In addition, the demand is rapidly increasing due to the increase of fine dust, the increase of allergic patients, and the improvement of living standards.

When the air purifier is intended for an environment that exceeds 100㎡, such as in a general home, the size of the device may be increased. In such a device, a filter corresponding to physical particles such as dust, a filter corresponding to chemical substances such as gas, and a filter corresponding to microorganisms such as bacterial viruses may be used in combination. That is, in a large space, an air purifier having a large size capable of receiving various filters in combination may be used.

However, using a large-sized air purifier outdoors or in a very large space such as a studio, a small space such as a vehicle interior or a public library is inefficient in terms of space utilization, mobility, and energy consumption. In addition, for frequent users, an air purifier that is small in size and can be used portable by individuals is more suitable than an air purifier of a large size. Under this background, portable air purifiers that can be used by individuals are being developed.

The portable air purifier is provided in a small and light form for easy portability. This portable air purifier has the advantage that the user can easily carry it and use it in a desired place. That is, the portable air purifier is a device suitable for users who frequently go out or have a life pattern of moving several places rather than staying in one place for a long time, such as at home.

In general, an air purifier includes a case in which an inlet port and an outlet port are formed, and a filter, a fan, and a dust sensor disposed in the case. In addition, in the portable air purifier that should be portable, a battery should be additionally built-in in addition to the above configuration.

The portable air purifier should be manufactured in a small size so that it is easy to carry. However, such a portable air purifier further requires the addition of a component for enhancing the portability of the portable air purifier, such as a battery, and thus, there are many difficulties in miniaturizing the portable air purifier.

For example, if the size of the battery is reduced for the miniaturization design of a portable air purifier, the capacity of the battery is inevitably reduced by that amount.

In addition, if the size of the fan or filter is reduced instead of reducing the size of the battery for the miniaturization design of the portable air purifier, there is a problem that the air purification performance of the portable air purifier is degraded by that much.

Accordingly, there is a need for a miniaturization design of a portable air purifier capable of miniaturizing a device without lowering battery capacity and air purification performance.

An object of the present invention is to provide a portable air purifier having an improved structure to improve portability while maintaining battery capacity and air purification performance.

The portable air purifier according to the present invention comprises: a case forming an accommodation space therein, and having one side and the other side open in the front and rear direction of the accommodation space; A fan assembly accommodated in the accommodating space and including a blower fan; A filter accommodated in the accommodation space and disposed behind the fan assembly; A battery accommodated in the accommodating space and disposed under the fan assembly and the filter unit; A sensor module accommodated in the accommodating space, disposed under the fan assembly and the filter unit, and coupled to the battery; And a mounting part provided on the battery to regulate a coupling position between the sensor module and the battery.

Through this configuration, since both the sensor module and the battery can be efficiently arranged in a narrow space within the case without reducing the size of the battery and dust sensor, it is possible to provide a high level of air purification performance while maintaining a compact size. It will be possible to provide a portable air purifier.

In addition, the present invention further comprises a filter case disposed at the rear of the fan assembly to support the filter, the sensor module is disposed under the filter case, and the upper region of the sensor module is higher than the battery case. It protrudes and is disposed in a space between the battery and the filter case, the filter case has a sensor coupling portion disposed in the space between the battery and the filter case and coupled to an upper region of the sensor module, and the sensor coupling A support surface for supporting the sensor module is formed in front of the sensor module on the rear surface of the negative, and the support surface is preferably formed in the same plane as the rear surface of the battery case.

Through this configuration, the coupling between the filter module and the battery, the coupling between the battery and the dust sensor, and the coupling between the dust sensor and the filter module can be made together. , The coupling stability between the battery and the dust sensor can be further improved.

In addition, the sensor module includes a sensing unit for detecting dust; A sensing case accommodating the sensing unit therein and including an inlet port and an exhaust port; And a fan that is accommodated in the sensing case and forms an airflow through which external air is introduced into the sensing case through the inlet and the air introduced into the sensing case is discharged to the outside of the sensing case through the exhaust port. , The inlet is disposed below the sensing case, and is disposed closer to the intake port than the exhaust port, and the exhaust port is disposed above the sensing case adjacent to the space between the battery and the filter case. Do.

Through this configuration, since the sensor module installed adjacent to the battery can cool the battery generated during the operation of the portable air purifier, in addition to the effect of securing space for efficient arrangement of both the dust sensor and the battery, The effect of suppressing excessive temperature rise can also be obtained.

According to the portable air purifier of the present invention, since both the sensor module and the battery can be efficiently arranged in a narrow space in the case without reducing the size of the battery and the sensor module, it is possible to provide a high level of air purification performance while being compact. It is possible to provide a portable air purifier that can maintain its size.

In addition, the present invention provides an effect of preventing excessive temperature rise of the battery in addition to the effect of securing space for efficiently arranging both the sensor module and the battery through a structure in which the sensor module and the battery are combined using the mounting part. can do.

1 is a front perspective view showing a front side of a portable air purifier according to a first embodiment of the present invention.
FIG. 2 is a rear perspective view showing the rear side of the portable air purifier shown in FIG. 1.
3 is an exploded perspective view showing an exploded state of the portable air purifier shown in FIG. 1.
4 is a cross-sectional view taken along the line "IV-IV" of FIG. 1.
5 is a perspective view showing the configuration of the case shown in FIG. 3.
6 is a perspective view showing the configuration of the filter mounting portion shown in FIG. 3.
7 to 10 are views showing a method of replacing a filter unit in a portable air purifier according to a first embodiment of the present invention.
11 is a perspective view showing the state of air flow in the portable air purifier according to the first embodiment of the present invention.
12 is a cross-sectional view showing the state of air flow in the portable air purifier according to the first embodiment of the present invention.
13 is a view showing a state in which the portable air purifier according to the first embodiment of the present invention is applied.
14 is a front perspective view showing a front side of a portable air purifier according to a second embodiment of the present invention.
15 is an exploded perspective view showing an exploded state of the portable air purifier shown in FIG. 14.
16 is a rear perspective view showing the rear side of the portable air purifier shown in FIG. 14;
17 is a rear exploded perspective view showing an exploded state of the portable air purifier shown in FIG. 16.
18 is a cross-sectional view taken along the line "XVIII-XVIII" in FIG. 14;
FIG. 19 is an exploded perspective view showing a partial configuration of the portable air purifier shown in FIG. 18 by separating.
FIG. 20 is a view showing a combined state of the fan cover and the case shown in FIG. 19.
FIG. 21 is a diagram illustrating an installed state of the battery shown in FIG. 20.
FIG. 22 is a view showing a combined state of the fan cover and the rear cover shown in FIG. 21.
FIG. 23 is an enlarged view showing an enlarged view of “XXIII” of FIG. 18.
24 is a front view showing the front of a portable air purifier according to a second embodiment of the present invention.
25 is a view showing an air flow pattern of a portable air purifier according to a second embodiment of the present invention.
FIG. 26 is a view showing a state in which a cup holder is installed in the air purifier shown in FIG. 25;
27 is an exploded perspective view showing a battery and a sensor module of a portable air purifier according to a second embodiment of the present invention separated.
28 is a cross-sectional view showing the internal structure of the sensor module shown in FIG. 27;
29 is an exploded perspective view showing a state before coupling between a filter module, a battery, and a sensor module of a portable air purifier according to a second embodiment of the present invention.
FIG. 30 is a diagram illustrating a coupling state between the filter module shown in FIG. 29 and a battery and a sensor module.
31 is a front perspective view showing a case according to a second embodiment of the present invention.
32 is a rear perspective view showing a case according to a second embodiment of the present invention.
33 is a cross-sectional view taken along the line "XXXIII-XXXIII" in FIG. 14;
FIG. 34 is a diagram schematically showing a coupling structure between the fan cover shown in FIG. 33 and the case and the filter case.
FIG. 35 is a cross-sectional view taken along the line "XXXV-XXXV" in FIG. 14;
FIG. 36 is a diagram schematically showing a coupling structure between the fan cover shown in FIG. 35 and the case and the filter case.
37 is a cross-sectional view taken along the line "XXXXVII-XXXXVII" in FIG. 14;
38 is a front view showing a fan cover and a blowing fan of a portable air purifier according to a second embodiment of the present invention separated.
39 is an enlarged view showing the fan cover and the blowing fan enlarged.
40 is a side cross-sectional view showing the fan cover and the blowing fan.
41 is a diagram showing a speed triangle showing a velocity component of air discharged through a blowing surface.
42 is a view showing a flow analysis result of an air purifier to which a guide vane is not applied to a fan cover.
43 is a view showing a flow analysis result of the portable air purifier according to the second embodiment of the present invention.
44 is a graph showing the results of measuring the air volume of the air purifier to which the guide vane is not applied to the fan cover and the air purifier according to the second embodiment of the present invention.
45 is a table showing the results of measuring the air volume of the air purifier in which the guide vanes are not applied to the fan cover and the air purifier according to the second embodiment of the present invention.

Hereinafter, an embodiment of a portable air purifier according to the present invention will be described with reference to the accompanying drawings. For convenience of description, thicknesses of lines or sizes of components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of users or operators. Therefore, definitions of these terms should be made based on the contents throughout the present specification.

<Portable air purifier according to the first embodiment of the present invention>

[Portable air purifier having a hexahedral shape]

1 is a front perspective view showing a front side of a portable air purifier according to a first embodiment of the present invention, and FIG. 2 is a rear perspective view showing a rear side of the portable air purifier shown in FIG. 1. In addition, FIG. 3 is an exploded perspective view showing an exploded state of the portable air purifier shown in FIG. 1, and FIG. 4 is a cross-sectional view taken along line “IV-IV of FIG. 1.

1 to 4, the portable air purifier 10 according to the first embodiment of the present invention may be formed in a substantially hexahedral shape. This portable air purifier 10 forms an exterior and is coupled to a case 120 in which a plurality of parts are accommodated, a front panel 110 coupled to the front of the case 120, and a rear of the case 120 It includes a rear panel 170. The portable air purifier 10 may have an erected hexahedral shape having a long length in the vertical direction as a whole. Therefore, the user can use the portable air purifier 10 upright or lying on it, and the phenomenon that the portable air purifier 10 is rolled in a place where shaking occurs, such as inside a vehicle, is prevented.

Define the direction. "Front" refers to the direction in which the front panel 110 is located from the case 120, and "rear" refers to the opposite direction in which the rear panel 170 is located from the case 120. Means direction.

[case]

5 is a perspective view showing the configuration of the case shown in FIG. 3.

1 to 5, the portable air purifier 10 includes a case 120. The case 120 has a hexahedral shape with an open rear portion, and an internal space is formed inside the case 120. The case 120 includes a front portion and a rear portion in which a surface facing the front portion is opened. For example, the case 120 may be formed of a metal material, for example, an aluminum material.

The rear portion of the case 120 is opened to inhale external air. Through this open rear portion, a number of components may be installed in the inner space of the case 120. The filter unit, which will be described later, is mounted or detached from the inside of the case 120 through the open rear portion. The rear panel 170 is coupled to the open rear portion, and thus the open rear portion may be covered.

A power button 183 is provided on one side of the case 120 to turn on or off the power of the portable air purifier 10. In addition, an air volume control button 185 disposed adjacent to the power button 183 is provided on one side of the case 120 to increase or decrease the air volume of the portable air purifier 10.

On the other side of the case 120, a locking portion 122a to which a band-shaped handle portion 15 (see FIG. 13) is constrained is provided. By this handle 15, the portable air purifier 10 can be improved in portability.

[Front panel]

The portable air purifier 10 includes a front panel 110 disposed in front of the case 120. As an example, the front panel 110 may be formed of a plastic resin material. The front panel 110 is a portion through which air purified by the portable air purifier 10 is discharged to the outside. To this end, a plurality of discharge ports 111 are provided on the front panel 110. As an example, the plurality of discharge ports 111 may be formed by penetrating or cutting at least a portion of the front panel 110. Air purified inside the portable air purifier 10 may be evenly discharged to the front of the portable air purifier 10 through a plurality of outlets 111.

As an example, the front panel 110 may have a plate shape. In addition, the front panel 110 is provided with a front panel coupling portion 113 in which at least a portion of the rim extends rearward. The front panel coupling portion 113 is a member for coupling to the front portion of the case 120. To this end, the front panel coupling portion 113 is fitted and coupled to the front panel coupling groove 121a formed on the front portion of the case 120. In this case, the front panel 110 may be configured to cover all the front portions of the case 120.

In addition, the front panel 110 further includes a front panel locking portion (115 in FIG. 3) for locking and locking the front portion of the case 120. The front panel locking portion 115 is coupled to the case 120 together with the front panel coupling portion 113 and is provided in a configuration for firmly mounting the front panel 110.

The front panel locking portion 115 is formed to protrude from one side of the front panel coupling portion 113. In addition, the front panel locking portion 115 is caught and restrained in the front panel locking groove (121b of FIG. 5) formed on the front portion of the case 120. As an example, the front panel locking portion 115 may be formed in a hook shape and may be fastened to the front panel locking groove 121b in a hook manner. In the front panel coupling portion 113, a plurality of front panel locking portions 115 may be disposed to be spaced apart.

[Rear panel]

The portable air purifier 10 may further include a rear panel 170 disposed behind the case 120. As an example, the rear panel 170 may be formed of a plastic resin material. The rear panel 170 is a portion in which external air is sucked into the portable air purifier 10. To this end, a plurality of suction ports 173 are provided on the rear panel 170. The plurality of suction ports 173 may be formed by penetrating or cutting at least a portion of the rear panel 170. External air can be easily sucked into the interior of the portable air purifier 10 through a plurality of intake ports 173.

The rear panel 170 is coupled to the case 120 to cover the open rear portion of the case 120. The rear panel 170 is provided with a recessed surface 171 in which at least a portion is recessed from the front to the rear. In this recessed surface 171, a plurality of suction ports 173 may be provided. As an example, the plurality of suction ports 173 may be symmetrically disposed on both sides of the depression surface 171. As the inlet 173 is arranged in this way, external air can be easily sucked through the inlet 173.

A detailed description of the rear panel 170 will be described later.

[Composition of portable air purifier]

6 is a perspective view showing the configuration of the filter mounting portion of FIG. 3.

3 to 6, the portable air purifier 10 includes a front panel 110, a case 120, an upper fan assembly 130, a lower fan assembly 135, a filter mounting part 140, and a battery ( 150), and a filter unit 160 and a rear panel 170. In addition, the portable air purifier 10 may further include a sub PCB 180 and a main PCB 190 for controlling the upper fan assembly 130, the lower fan assembly 135, or the filter unit 160.

Here, the upper fan assembly 130, the lower fan assembly 135, the filter mounting unit 140, the battery 150, the filter unit 160, the sub PCB 180, and the main PCB 190 are all the case 120 ) Is housed inside. In addition, the rear panel 170 covers the open rear portion of the case 120, so that components disposed inside the case 120 can be protected.

[Detailed configuration of case]

As described above, the case 120 may have an inner space and may have a hexahedral shape with an open rear portion. In addition, in the inner space of the case 120, the fan assemblies 130 and 135, the filter mounting unit 140, and the filter unit 160 are sequentially disposed. At this time, the fan assemblies 130 and 135, the filter mounting unit 140, and the filter unit 160 are disposed to overlap in the axial direction of the blowing fans of the fan assemblies 130 and 135. That is, the parts constituting the portable air purifier 10 are installed side by side in the horizontal direction.

The case 120 includes a front portion 121, a side portion 122, an upper surface portion 123, and a lower surface portion 124.

The front panel 110 is coupled to the front part 121. To this end, the front part 121 includes a front panel coupling groove 121a into which the front panel 110 is inserted. As an example, the front panel coupling groove 121a may be formed to be recessed inward along the edge of the case front portion 121. In addition, the front panel coupling groove 121a is configured such that the front panel coupling portion 113 of the front panel 110 is in close contact and fitted.

In the case front portion 121, a front panel locking groove 121b coupled to the front panel locking portion 115 of the front panel 110 may be further provided. As an example, the front panel locking groove 121b may be formed in a form in which a part of the front panel coupling groove 121a is further recessed. In addition, the front panel locking portion 115 may be engaged and restrained in the front panel locking groove 121b. A plurality of front panel locking grooves 121b may be provided and may be respectively disposed at points corresponding to the front panel locking portion 115.

In addition, an upper air discharge part 121c through which air that has passed through the upper fan assembly 130 may be discharged may be further provided on the case front part 121. The upper air discharge part 121c is formed by penetrating or cutting a part of the front part 121 of the case. In the case front part 121, a plurality of upper air discharge parts 121c may be spaced apart from each other. As an example, the plurality of upper air discharge parts 121c may be radially arranged to form a fan shape. However, the present invention is not limited thereto, and the plurality of upper air discharge parts 121c may be arranged in various forms such as a grid shape.

In addition, a lower air discharge part 121d through which air passing through the lower fan assembly 135 is discharged may be further provided on the case front part 121. The lower air discharge part 121d is formed by penetrating or cutting a part of the case front part 121. In the case front part 121, a plurality of lower air discharge parts 121d may be spaced apart and disposed. As an example, the plurality of lower air discharge parts 121d may be arranged radially like the upper air discharge part 121c to form a fan shape.

That is, the lower air discharge part 121d may be formed in the same shape as the upper air discharge part 121c. The lower air discharge part 121d is disposed to be spaced apart from the lower side of the upper air discharge part 121c. With this configuration, air that has passed through the upper fan assembly 130 is discharged by the upper air discharge unit 121c, and the air that has passed through the lower fan assembly 135 is discharged by the lower air discharge unit 121d. Can be ejected.

In the present embodiment, it has been described that the fan assembly of the portable air purifier is composed of two, but the present invention is not limited thereto, and may be implemented with one fan assembly. In this case, either an upper fan assembly or a lower fan assembly may be provided. As another example, three or more fan assemblies may be provided.

In addition, the case 120 may further include a locking portion 122a to which the band-shaped handle portion 15 is coupled. The locking part 122a is coupled to a handle part 15 provided separately so that the user can easily carry the portable air purifier 10 or hang it on an apparatus. By this configuration, the portable convenience of the portable air purifier 10 can be improved. The locking portion 122a may be disposed on the case side portion 122. However, the present invention is not limited thereto, and the locking portion 122a may be provided on the case front portion 121 or the case upper surface portion 123.

In addition, a button through hole 123a for exposing the power button 183 and the air volume control button 185 to the outside may be further provided in the case 120. The button through hole 123a may be understood as a hole through which the power button 183 and the air volume control button 185 located inside the case 120 are exposed to the outside of the case 120. The button through-holes 123a are formed of two to expose the power button 183 and the air volume control button 185 to the outside, respectively. As an example, the button through hole 123a may be formed in the upper surface part 123 of the case, but is not limited thereto.

In addition, the case 120 may be further provided with a rear panel locking groove (not shown) to be coupled to the rear panel 170. The rear panel locking groove is provided on the inner surface of the case 120. As an example, the rear panel locking groove may be formed by recessing or cutting a portion of the inner part of the case upper surface 123. In addition, in the rear panel locking groove, a rear panel locking portion 175 to be described later may be engaged and restrained. A plurality of rear panel locking grooves may be provided, and may be respectively disposed at points corresponding to the rear panel locking portions 175.

In addition, a magnet 124a for coupling the rear panel 170 may be further provided in the case 120. The magnet 124a may include a permanent magnet. As an example, the magnet 124a may be composed of a single magnet having one pole. In addition, the magnet 124a may be coupled with the magnet coupling portion 177 due to magnetic coupling (manpower) in response to the magnet coupling portion 177 to be described later.

[Upper fan assembly and lower fan assembly]

The portable air purifier 10 includes an upper fan assembly 130 and a lower fan assembly 135 that suck air from the rear of the portable air purifier 10 and discharge air to the front. At this time, the upper fan assembly 130 and the lower fan assembly 135 are spaced apart in the vertical direction. That is, the upper fan assembly 130 and the lower fan assembly 135 may be disposed to overlap in a vertical direction.

In addition, the upper fan assembly 130 and the lower fan assembly 135 may be disposed to face the upper air discharge part 121c and the lower air discharge part 121d formed on the case front part 121. Accordingly, the air sucked through the rear panel 170 may pass through the upper fan assembly 130 and the lower fan assembly 135 and be discharged through the front panel 110.

In this embodiment, it is exemplified that the upper fan assembly 130 and the lower fan assembly 135 have the same size and shape. However, the present invention is not limited thereto, and the upper fan assembly 130 and the lower fan assembly 135 may have different sizes and shapes.

The upper fan assembly 130 and the lower fan assembly 135 include upper and lower fans 131 and 136 that generate air flow, and an upper fan motor (not shown) that imparts rotational force to the upper and lower fans 131 and 136. ) And a lower fan motor (not shown), and upper and lower fan brackets 133 and 138 that are coupled to the upper and lower fans 131 and 136.

The upper and lower fans 131 and 136 may include an axial fan. Accordingly, air sucked into the case 120 through the rear panel 170 may be sucked in the axial direction of the upper and lower fans 131 and 136 and discharged in the axial direction of the upper and lower fans 131 and 136. have.

Motor shafts are respectively coupled to the upper fan motor and the lower fan motor, and each motor shaft may be coupled to the upper and lower fans 131 and 136, respectively. For example, the upper fan motor and the lower fan motor may include a BLDC motor capable of adjusting a frequency.

The upper and lower fan brackets 133 and 138 may be coupled to the upper and lower fans 131 and 136 to guide the flow of air passing through the upper and lower fans 131 and 136. To this end, the upper and lower fan brackets 133 and 138 include upper and lower bracket openings 133a and 138a for guiding air to the suction side of the upper and lower fans 131 and 136.

That is, air sucked into the case 120 through the rear panel 170 may be sucked into the upper and lower fans 131 and 136 through the upper and lower bracket openings 133a and 138a. For example, the upper and lower bracket openings 133a and 138a may have a circular shape, and may be configured such that the upper and lower fans 131 and 136 are inserted, respectively.

Further, the upper and lower fan brackets 133 and 138 further include bracket fastening portions 133b and 138b for fastening with the case 120. The bracket fastening parts 133b and 138b may be fastened to the case front part 121 by a fastening member. In this case, the bracket fastening parts 133b and 138b may contact a fastening boss (not shown) provided inside the case front part 121. Accordingly, a predetermined fastening member may pass through the bracket fastening portions 133b and 138b to be fastened to the fastening boss.

[Filter mounting part and battery]

The portable air purifier 10 further includes a filter mounting unit 140 on which the filter unit 160 is mounted, and a battery 150. The filter mounting part 140 is disposed behind the upper fan assembly and the lower fan assembly 130 and 135.

The filter mounting part 140 includes a base part 141 in which the base part base battery 150 is installed, and a recessed part 142 that forms a space in which the filter part 160 is mounted by a part of the base part 141 being recessed. ). The depression 142 may contact rear surfaces of the upper fan assembly and the lower fan assembly 130 and 135.

The base portion 141 may have an erect plate shape. As an example, the base portion 141 may have a rectangular plate shape having a long length in the vertical direction. In addition, the battery 150 may be installed at a lower point of the base portion 141. The battery 150 is positioned at a lower point so as to be from the base portion 141 in consideration of the center of gravity of the portable air purifier 10. As an example, the battery 150 may be disposed under the filter unit 160.

The battery 150 may supply power for driving the portable air purifier 10. To this end, the battery 150 may be electrically connected to at least one of the upper fan assembly 130, the lower fan assembly 135, the sub PCB 180, the main PCB 190, and the filter unit 160.

The recessed part 142 forms a mounting space in which the filter part 160 is mounted while a part of the base part 141 is recessed forward. The recessed part 142 may be formed in a form in which the rest of the base part 141 except for the area in which the battery 150 is installed is recessed forward.

The depression 142 may protrude forward by a length corresponding to the thickness of the filter unit 160. Accordingly, the filter unit 160 may be stably supported inside the recessed portion 142. At this time, a seating groove or a seating protrusion may be provided on the inner surface of the recessed portion 142 to allow the filter unit 160 to be firmly mounted. With this configuration, the filter unit 160 may be mounted inside the filter mounting unit 140 through the open rear surface of the filter mounting unit 140.

In addition, guide holes 142a and 142b for guiding the air passing through the filter unit 160 to the suction side in the axial direction of the upper fan 131 and the lower fan 136 may be further provided in the depression 142.

The guide holes 142a and 142b include an upper guide hole 142a and a lower guide hole 142b. The upper guide hole 142a and the lower guide hole 142b are disposed on the front side of the depression 142.

In this embodiment, it is illustrated that the front portion of the depression 142 is formed in a square shape. In addition, an upper guide hole 142a may be disposed at an upper portion of the front portion of the depression 142, and a lower guide hole 142b may be disposed at a lower portion thereof. That is, the upper guide hole 142a and the lower guide hole 142b are spaced apart in the vertical direction. In this case, the upper guide hole 142a and the lower guide hole 142b may be disposed to face the upper bracket opening 133a and the lower bracket opening 138a, respectively.

As an example, the upper guide hole 142a and the lower guide hole 142b may be formed in a substantially circular shape. In addition, the upper guide hole 142a and the lower guide hole 142b may be concentric with the upper bracket opening 133a and the lower bracket opening 138a, respectively. Therefore, the air sucked through the rear panel 170 is purified while passing through the filter unit 160, and the purified air passes through the upper guide hole 142a and the lower guide hole 142b, respectively, and the upper fan assembly ( 130 and the lower fan assembly 135 may flow.

In addition, on the front surface of the recessed portion 142, mounting portion fastening portions 142c and 142d for simultaneously fastening the upper fan assembly 130, the lower fan assembly 135, and the filter mounting portion 140 to the case 120 are provided. I can.

The mounting portion fastening portions 142c and 142d include an upper mounting portion fastening portion 142c and a lower mounting portion fastening portion 142d disposed below the upper mounting portion fastening portion 142c. In this case, the upper mounting portion fastening portion 142c and the lower mounting portion fastening portion 142d may be provided in plural, and a part of the front surface of the recessed portion 142 may be cut off or formed through.

As an example, the upper mounting part fastening part 142c is disposed adjacent to the upper guide hole 142a, and the lower mounting part fastening part 142d is disposed adjacent to the lower guide hole 142b. In addition, the upper mounting portion fastening portion and the lower mounting portion fastening portions 142c and 142d are disposed to face the upper and lower bracket fastening portions 133b and 138b, respectively.

Accordingly, the filter mounting part 140, the upper fan/lower fan assemblies 130 and 135, and the case 120 may be fastened together by a single fastening member. With this configuration, the upper fan/lower fan assemblies 130 and 135 and the filter mounting part 140 can be easily assembled in the case 120.

[Filter part]

In the portable air purifier 10, a filter unit that purifies the air by filtering out any one of physical particles such as dust/fine dust/ultra-fine dust, chemical substances such as odor particles/hazardous gases, and microorganisms such as bacteria/viruses ( 160) is further included.

That is, the filter unit 160 means any one of a dust collection filter for filtering out physical particles such as dust, a deodorization filter for filtering chemicals such as gas, or a sterilization filter for filtering microorganisms such as bacterial viruses. can do.

The portable air purifier 10 of the present embodiment may be equipped with a filter unit 160 including any one of a dust collection filter, a deodorization filter, and a sterilization filter. Accordingly, any one of a dust collection filter, a deodorization filter, and a sterilization filter may be selectively used according to the user's preference. That is, the purpose or performance of the portable air purifier 10 may vary according to the selected filter type.

As an example, the dust collecting filter may include a high efficiency particulatae air filter. In addition, a carbon filter may be included in the deodorization filter. In addition, an ionizer may be included in the sterilization filter. However, the present invention is not limited thereto, and various types of filters may be included in the dust collection filter, the deodorization filter, and the sterilization filter.

The filter unit 160 may be mounted on or removed from the filter mounting unit 140.

Specifically, the filter unit 160 may be mounted inside the depression 142 of the filter mounting unit 140. At this time, the filter unit 160 may be provided with a seating groove provided on the inside of the recessed portion 142 or a protrusion or groove that is coupled to the seating protrusion. Accordingly, the filter unit 160 may be stably supported without being removed from the filter mounting unit 140 or shaken. As an example, the filter unit 160 may have a hexahedral shape, but is not limited thereto.

[Sub PCB and Main PCB]

The portable air purifier 10 further includes a sub PCB 180 having a power button 183 and an air volume control button 185.

The sub PCB 180 includes a sub substrate 181, a power button 183 installed on the sub substrate 181, and an air volume control button 185. The power button 183 performs a function of turning on or off the power of the portable air purifier 10. In addition, the air volume control button 185 performs a function of increasing or decreasing the air volume of the portable air purifier 10. The sub PCB 180 is electrically connected to the main PCB 190 to be described later.

The sub PCB 180 may be disposed on the uppermost side of the case 120. That is, the sub PCB 180 is disposed above the upper fan assembly 130 and the filter unit 160. At this time, the power button 183 and the air volume control button 185 are exposed to the outside of the case 120 through a button through hole 123a provided in the upper surface part 123 of the case. Accordingly, the user can turn on/off the portable air purifier 10 or adjust the air volume of the portable air purifier 10 by manipulating the exposed buttons.

In addition, the portable air purifier 10 further includes a main PCB 190 that manages the entire hardware module of the portable air purifier 10. That is, the main PCB 190 may function as a control unit of the portable air purifier 10.

The main PCB 190 may be disposed below the lower fan assembly 135 in the case 120. As an example, the main PCB 190 may be arranged in an erect shape and supported by a substrate support provided inside the case 120.

The main PCB 190 includes a main substrate 191 and a plurality of elements 193 installed on the main substrate 191. The main substrate 191 may be electrically connected to the upper fan assembly 130, the lower fan assembly 135, the battery 150, and the sub PCB 180. The main PCB 190 may control the upper fan assembly 130 and the lower fan assembly 135 based on commands input through the power button 183 and the air volume control button 185.

In addition, the main PCB 190 may be electrically connected to the filter unit 160. As an example, when the filter unit 160 includes an ionizer, the main PCB 190 may be electrically connected to the ionizer to supply power to the ionizer. As another example, the filter unit 160 is electrically connected to the battery 150, and through this, the filter unit 160 may receive power directly from the battery 150.

[Detailed configuration of rear panel]

As described above, the rear panel 170 is disposed at the rear of the case 120 and is a portion in which external air is sucked into the interior of the portable air purifier 10. The rear panel 170 is coupled to the rear of the case 120 to cover the open rear portion of the case 120.

The rear panel 170 further includes a rear panel locking part 175 for locking and locking the rear portion of the case 120. The rear panel locking part 175 is coupled to the rear end of the case 120 and is provided in a configuration for firmly mounting the rear panel 170.

The rear panel locking part 175 may be formed to protrude from the upper end of the rear panel 170. In addition, the rear panel locking portion 175 is locked in a rear panel locking groove (not shown) formed inside the upper surface portion 123 of the case 120. As an example, the rear panel locking portion 175 may be formed in a hook shape and may be fastened to the rear panel locking groove in a hook manner. In the rear panel 170, a plurality of rear panel locking portions 175 may be spaced apart from each other.

Here, the rear panel locking part 175 may be referred to as a "first fixing part".

Further, the rear panel 170 further includes a magnet coupling portion 177 for being in close contact with the rear portion of the case 120. The magnet coupling portion 177 is coupled to the magnet 124a provided on the inner side of the case 120 and is provided in a configuration so that the rear panel 170 is not removed from the case 120.

The magnet coupling part 177 may be provided at the lower end of the rear panel 170. That is, the magnet coupling portion 177 may be mounted at a position corresponding to the magnet 124a.

The magnet coupling portion 177 includes a magnetic material for coupling with the magnet 124a. That is, the magnet coupling portion 177 may include a metal body or a magnet. Therefore, when the rear panel 170 is coupled to the rear surface of the case 120, the magnet coupling portion 177 reacts with the magnet 124a and may be fixed to the magnet 124a by mutual attraction. Accordingly, the rear panel 170 can be fixed without shaking.

Here, the magnet coupling part 177 may be referred to as a "second fixing part".

[Portable air purifier with easy attachment and detachment of filter unit]

In the portable air purifier 10 according to the present embodiment, the filter unit 160 may be easily mounted and detached in the case 120. As an example, in order to clean dust accumulated in the dust collecting filter included in the filter unit 160, the filter unit 160 may be detached from the case 120. As another example, when the currently installed filter unit 160 is a dust collection filter, the filter unit 160 may be detached to replace the dust collection filter with another filter, that is, a deodorization filter or a sterilization filter.

7 to 10 are views showing a method of replacing a filter unit in a portable air purifier according to an embodiment of the present invention.

In order to replace the filter unit 160, as shown in FIGS. 7 and 8, the rear panel 170 coupled to the rear of the case 120 is first separated. And the inside of the case 120, that is, the filter unit 160 mounted on the filter mounting unit 140 is taken out to the outside. For example, if the filter unit 160 is a dust collecting filter, the filter unit 160 may be remounted to the filter mounting unit 140 after cleaning the filter unit 160. Alternatively, after separating the filter unit 160, another filter, that is, a filter unit 160 including a deodorizing filter or a sterilization filter, may be mounted on the filter mounting unit 140.

When the filter unit 160 is mounted on the filter mounting unit 140, the rear panel 170 is recombined to the rear of the case 120. At this time, the rear panel 170 is first coupled to the case 120 on the upper side. In order to couple the rear panel 170 to the case 120, as shown in FIG. 9, a rear panel locking portion 175 provided at the upper end of the rear panel 170 is formed on the inside of the case 120. Fit into the panel locking groove. Accordingly, the upper portion of the rear panel 170 is fixed to the case 120.

When the upper part of the rear panel 170 is fixed to the case 120, as shown in FIGS. 9 and 10, the lower part of the rear panel 170 is moved toward the case 120. Then, the magnet coupling portion 177 provided under the rear panel 170 is close to the magnet 124a provided inside the case 120.

When the magnet coupling portion 177 is close to the magnet 124a, the magnet coupling portion 177 reacts with the magnet 124a and is coupled with the mart net 124a by mutual attraction. With this configuration, the lower portion of the rear panel 170 can be easily coupled to the case 120 and the lower portion of the rear panel 170 can be firmly fixed.

As described above, the portable air purifier 10 has the advantage of being easy to manage and repair the filter of the portable air purifier 10, since the filter unit 160 can be easily mounted and detached in the case 120. . In addition, since the filter unit 160 may include not only a dust collecting filter, but also a deodorizing filter or a sterilization filter, there is an advantage that a user can selectively use a desired filter according to his or her preference.

[Air flow of portable air purifier]

11 is a perspective view showing an air flow of a portable air purifier according to an embodiment of the present invention, and FIG. 12 is a cross-sectional view showing an air flow of a portable air purifier according to an embodiment of the present invention.

11 and 12, when the portable air purifier 10 according to an embodiment of the present invention operates, air flow from the rear to the front of the portable air purifier 10 occurs. That is, the air flow path of the portable air purifier 10 has straightness.

In detail, air flow inside the portable air purifier 10 is generated by driving the upper fan assembly 130 and the lower fan assembly 135. That is, when the upper fan 131 and the lower fan 136 are driven, outdoor air is sucked into the case 120 through the inlet 173 provided in the rear panel 170.

That is, the outdoor air sucked into the case 120 through the inlet 173 passes through the filter unit 160 positioned adjacent to the rear panel 170, and in this process, physical particles such as dust and chemicals such as gases are Substances, bacteria and viruses are filtered out of the air.

The air purified through the filter unit 160 as described above is guided by the guide holes 142a and 142b of the filter mounting unit 140, and the upper fan assembly 130 disposed in front of the filter unit 160 and It flows toward the lower fan assembly 135. In this embodiment, since the fan assemblies 130 and 135 for generating the flow of air are formed of two, there is an advantage that the intake air volume and the discharge air volume of the portable air purifier 10 are remarkably increased. In addition, since the two fan assemblies 130 and 135 are arranged to be overlapped in the vertical direction, the portable air purifier 10 can be implemented in which the air volume is increased and the size is compact.

And the air that has passed through the upper fan assembly 130 and the lower fan assembly 135 passes through the upper air discharge part 121c and the lower air discharge part 121d of the case front part 121, and then the front panel ( It is discharged to the outside through the discharge port 111 provided in 110). With this configuration, the air flow inside the portable air purifier 10 can have a straightness, and accordingly, purified air can be quickly supplied to a user looking at the portable air purifier 10.

[Example of use of portable air purifier]

The portable air purifier 10 may be used in a studio, an office, a vehicle interior, and a partitioned indoor space. Particularly, the portable air purifier 10 may have a relatively small purifying ability compared to a large air purifier, and thus, it is preferable to be used in an indoor space less than a certain area.

Hereinafter, as an example, the portable air purifier 10 will be described as being used inside a vehicle.

13 is a view showing a state in which a portable air purifier according to an embodiment of the present invention is applied.

Referring to FIG. 13, the portable air purifier 10 may be located inside the vehicle 20. The portable air purifier 10 may be mounted on a structure in the vehicle interior 20. Since the portable air purifier 10 is formed in an approximate hexahedral shape, it may be placed on a relatively flat surface or laid out. That is, since there is no restriction on the posture or installation position of the portable air purifier 10, the portable air purifier 10 can be placed and used in various postures.

In addition, the portable air purifier 10 may be placed on a dashboard 21 of the vehicle interior 20, for example. In addition, the portable air purifier 10 may be disposed in a state in which a discharge port through which air is discharged is laid down toward a user seated in a driver's seat. Then, the air purified through the portable air purifier 10 may be supplied to the user seated in the driver's seat through the discharge port.

On one side of the portable air purifier 10, a band-shaped handle portion 15 may be provided. Accordingly, the user may use the handle 15 by hanging it on an arbitrary structure in the vehicle interior 20.

As such, the portable air purifier 10 has the advantage of being able to stably provide purified air to a user by being disposed in various spaces and various postures.

<Portable air purifier according to the second embodiment of the present invention>

[Appearance of portable air purifier]

14 is a front perspective view showing a front side of a portable air purifier according to a second embodiment of the present invention, and FIG. 15 is an exploded perspective view showing an exploded state of the portable air purifier shown in FIG. 14. In addition, FIG. 16 is a rear perspective view showing a rear side of the portable air purifier shown in FIG. 14, FIG. 17 is a rear exploded perspective view showing an exploded state of the portable air purifier shown in FIG. 16, and FIG. It is a cross-sectional view taken along the line "XVIII-XVIII".

14 to 17, the portable air purifier 50 according to the embodiment of the present invention may be formed in a substantially hexahedral shape. The portable air purifier 50 includes a case 520, a front panel 510 and a rear panel 570.

The case 520 forms an external skeleton of the portable air purifier 50. A number of components are accommodated in the case 520.

The front panel 510 is coupled to the front of the case 520. This front panel 510 forms the front appearance of the portable air purifier 50.

The rear panel 570 is coupled to the rear of the case 520. This rear panel 570 forms the rear appearance of the portable air purifier 50.

The portable air purifier 50 may be formed in an erected hexahedral shape having a long length in the vertical direction as a whole. Accordingly, the user may use the portable air purifier 50 upright or lay it down. In addition, even when the portable air purifier 50 is used in a laid-down position in a place where shaking occurs, such as inside a vehicle, the portable air purifier 50 does not roll and can stably maintain its position.

Define the direction. "Front" refers to the direction in which the front panel 510 is located from the case 520, and "rear" refers to the opposite direction and the rear panel 520 is located from the case 520 It means the direction of becoming.

[Overall structure of portable air purifier]

The portable air purifier 50 of this embodiment includes the front panel 510, the case 520, the fan cover 530, the fan assemblies 540 and 545, the filter module 550, the battery 560, the rear panel 570, and Includes a rear cover 580.

The front panel 510 is disposed at the forefront of the portable air purifier 50 to form the front exterior of the portable air purifier 50. The air purified by the portable air purifier 50 is discharged to the outside through the front panel 510. To this end, a plurality of discharge ports 510a are provided on the front panel 510.

The case 520 forms an external skeleton of the portable air purifier 50. The top, side, and bottom exteriors of the portable air purifier 50 are formed by the case 520. An accommodation space is formed inside the case 520. In this accommodation space, various components constituting the portable air purifier 50, such as the fan cover 530, the fan assemblies 540 and 545, the battery 560, and the filter module 550, are accommodated. The case 520 is preferably formed to have sufficient strength to protect the parts accommodated in this way from external impact.

The fan cover 530 is accommodated in an accommodation space inside the case 520 and is disposed in front of the fan assemblies 540 and 545. That is, the fan cover 530 is disposed between the front panel 510 and the fan assemblies 540 and 545 inside the case 520.

The fan cover 530 fixes the fan assemblies 540 and 545 inside the case 520. In addition, the fan cover 530 also serves to induce a flow of air so that the air blown by the fan assemblies 540 and 545 does not spread to the periphery and can go straight forward. In addition, the fan cover 530 may be involved in fixing the filter module 550 and the battery 560.

The fan assemblies 540 and 545 are accommodated in an accommodation space inside the case 520 and are disposed between the fan cover 530 and the filter module 550. That is, the fan assemblies 540 and 545 are disposed behind the fan cover 530 and in front of the filter module 550. The fan assemblies 540 and 545 serve to suck air from the rear of the portable air purifier 50 and discharge the air to the front.

The filter module 550 is accommodated in an accommodation space inside the case 520 and is disposed between the fan assemblies 540 and 545 and the rear panel 570. That is, the filter module 550 is disposed behind the fan assemblies 540 and 545 and in front of the rear panel 570. The filter module 550 serves to purify the air sucked through the rear of the portable air purifier 50. The air purified while passing through the filter module 550 passes through the fan assemblies 540 and 545, the fan cover 530, and the front panel 510 and is discharged to the front of the portable air purifier 50.

The battery 560 is accommodated in an accommodation space inside the case 520 and is disposed under the fan assemblies 540 and 545 and the filter module 550. The battery 560 may supply power for driving the portable air purifier 50. To this end, the battery 560 may be electrically connected to at least one of the fan assemblies 540 and 545 and the filter module 550, and a sub PCB 590 and a main PCB 595 which will be described later.

The rear panel 570 is disposed at the rearmost side of the case 520 together with the rear cover 580 to form the rear exterior of the portable air purifier 50. This rear panel 570 is disposed behind the filter module 550. External air is sucked into the portable air purifier 50 through the rear panel 570. To this end, the rear panel 570 is provided with a plurality of first suction ports 570a.

In addition, the rear cover 580 is disposed at the rearmost side of the case 520 together with the rear panel 570 to form the rear appearance of the portable air purifier 50. This rear cover 580 is disposed behind the battery 560. According to this embodiment, the rear area of the filter module 550 is covered by the rear panel 570. In addition, the rear area of the battery 560 is covered by the rear cover 580.

[Case structure]

The portable air purifier 50 includes a case 520 that forms an external skeleton of the portable air purifier 50. An accommodation space is formed inside the case 520, and the front and rear of the accommodation space are opened.

According to the present embodiment, the case 520 is formed in a hexahedral shape with front and rear surfaces open, and an accommodation space with open front and rear surfaces is formed inside the case 520. The case 520 may be formed of a metal material. In this embodiment, it is illustrated that the case 520 is formed of an aluminum material having high strength and light weight.

The rear surface of the case 520 is opened to suck in external air. In addition, the front surface of the case 520 is opened to discharge the purified air from the receiving space inside the case 520. Various parts constituting the portable air purifier 50 may be installed in the accommodation space of the case 520 through the front and rear surfaces of the open case 520.

The filter 559 to be described later is mounted or detached from the inside of the case 520 through the open rear surface of the case 520. On the open rear surface of the case 520, the rear panel 570 is coupled. The rear panel 570 coupled to the case 520 covers the open rear surface of the case 520.

The case 520 is formed in a hexahedral shape with an open front and a rear surface, and a side portion 521 and an upper surface portion 523, a first connection surface portion 525, a bottom surface portion 527, and a second connection surface portion 529 ) Can be included.

The side portion 521 forms a side surface of the case 520. The side portion 521 is formed in a vertical plane that forms a wall surface blocking the side portion of the receiving space inside the case 520. The case 520 is provided with a pair of side portions 521, and the pair of side portions 521 face each other and are disposed to be spaced apart from each other by a predetermined interval. At this time, the pair of side portions 521 are disposed side by side with each other in the lateral direction.

The upper surface portion 523 is disposed above the side portion 521 and forms a plane parallel to the separation direction of the pair of side portions 521, that is, a plane in the transverse direction. This upper surface portion 523 forms an upper surface of the case 520.

The first connection surface portion 525 is disposed between the side portion 521 and the upper surface portion 523. The first connection surface portion 525 is between one end of the upper surface portion 523 and a side portion 521 disposed under it, and between the other end of the upper surface portion 523 and a side portion 521 disposed under the upper surface portion 523. Each is placed.

Each of the first connection surface portions 525 connects the side portions 521 and the upper surface portions 523 in a rounded manner. The first connection surface portion 525 serves to improve the safety and appearance of the product by forming an upper edge of the case 520 to which the side portion 521 and the upper surface portion 523 are connected to be rounded.

The bottom portion 527 is disposed under the upper surface portion 523 and the side portion 521, and forms a plane parallel to the upper surface portion 523. The bottom surface portion 527 forms the bottom surface of the case 520. In addition, the bottom portion 527 is a portion that supports the portable air purifier 50 so that the portable air purifier 50 can maintain an erect posture.

The second connection surface portion 529 is disposed between the side portion 521 and the bottom surface portion 527. The second connection surface portion 529 is between one end of the bottom portion 527 and the side portion 521 disposed thereon, and between the other end of the bottom surface portion 527 and the side portion 521 disposed thereon. Each is placed.

Each second connection surface portion 529 connects the side surface portion 521 and the bottom surface portion 527 in a rounded manner. The second connection surface portion 529 serves to improve the safety and appearance of the product by forming a round lower edge of the case 520 to which the side portion 521 and the bottom portion 527 are connected.

In the front edge of the case 520, a front groove 520a is formed. The front groove 520a is formed in a form in which a portion of the front edge of the case 520 is recessed rearward. Accordingly, in the front edge of the case 520, a step is formed in which the inner side toward the receiving space is concave toward the rear of the case 520 than the outer side.

In addition, a rear groove 520b may be formed on the rear edge of the case 520. The rear groove 520b is formed in a shape in which a portion of the rear edge of the case 520 is depressed forward. Accordingly, in the rear edge of the case 520, a step is formed in which the inside facing the accommodation space is concave toward the front of the case 520 than the outside.

Meanwhile, a power button 592 may be provided on the upper portion of the case 520, that is, on the upper surface portion 523 of the case 520. The power button 592 is provided as an operation button for turning on/off the power of the portable air purifier 50.

In addition, an air volume control button 593 may be provided on the upper part of the case 520. The air volume control button 593 is provided as an operation button for increasing or decreasing the air volume of the portable air purifier 50. The air volume control button 593 may be disposed adjacent to the power button 592 so that a user can easily identify and operate it.

In addition, the case 520 is provided with a button through hole 523a exposing the power button 592 and the air volume control button 593 to the outside. The button through hole 523a is provided as a hole through which the power button 592 and the air volume control button 593 located inside the case 520 are exposed to the outside of the case 520.

In this embodiment, it is illustrated that two button through holes 523a are provided in the upper surface portion 523 of the case 520. One of them is for exposing the power button 592 and the other is for exposing the air volume control button 593 to the outside of the portable air purifier 50.

As another example, one or three or more button through holes 523a may be provided depending on the number of buttons provided in the portable air purifier 50, or may be provided on a surface other than the upper surface 523. have.

In addition, a strap coupling portion 505 for coupling the strap 501 to the case 520 may be provided in the case 520. The strap 501 is provided to be held by the user by hand. Instead of holding the portable air purifier 50 by hand, the user can lift the portable air purifier 50 by grabbing the strap 501. That is, by the strap 501, the portable convenience of the portable air purifier 50 may be improved.

The strap coupling portion 505 and the strap 501 may be disposed at a boundary between the upper surface portion 523 and the first connection surface portion 525 or on the first connection surface portion 525. The strap coupling portion 505 and the strap 501 are disposed at this position to minimize the presence of the strap 501 adversely affecting the use of the portable air purifier 50.

That is, when the strap coupling portion 505 and the strap 501 are disposed at the boundary between the upper surface portion 523 and the first connection surface portion 525, or on the first connection surface portion 525, the portable air purifier 50 is erected. When used as the strap 501 can reduce the possibility of interfering with the operation of the power button 592 or the wind direction control button 593.

In addition, when the strap coupling portion 505 and the strap 501 are arranged as described above, the strap 501 is laid under the portable air purifier 50 when the portable air purifier 50 is used in a laid state, and thus It is possible to reduce the possibility that the seating state of the portable air purifier 50 becomes unstable.

The receiving space inside the case 520 may be divided into a first area A and a second area B. When the accommodation space is divided vertically, the upper region becomes the first region A, and the lower region becomes the second region B. It should be noted that the first area (A) and the second area (B) are not physically divided areas, but are only conceptually divided areas.

According to the present embodiment, among the configurations accommodated in the accommodation space, the fan assemblies 540 and 545 and the filter module 550 are disposed in the first area A, and the battery 560 is disposed in the second area B.

[Front panel]

The front panel 510 is disposed at the forefront of the portable air purifier 50 to form the front exterior of the portable air purifier 50. A plurality of discharge ports 510a are provided in the front panel 510.

As an example, the plurality of discharge ports 510a may be formed by penetrating or cutting at least a portion of the front panel 510. The air purified inside the portable air purifier 50 may be discharged to the front of the portable air purifier 50 through the plurality of discharge ports 510a formed as described above.

In this embodiment, it is illustrated that the front panel 510 is formed in a plate shape. The front panel 510 is provided with a front panel coupling portion 513 in which at least a part of an edge of the front panel 510 extends rearward.

The front panel coupling part 513 is provided to fix the front panel 510 to the front of the case 520. The front panel coupling portion 513 may be fixed to the front of the case 520 by being coupled to the fan cover 530 disposed at the foremost inside the case 520. In this case, the coupling between the front panel 510 and the fan cover 530 may be formed in a form in which the front panel coupling portion 513 is fitted into the front panel coupling groove 531a formed in the fan cover 530.

As another example, the front panel coupling portion 513 may be fixed to the front of the case 520 in a form that is directly coupled to the front edge of the case 520. In this case, a coupling groove for fitting the front panel coupling portion 513 may be formed at the front edge of the case 520.

In addition, a front panel locking part 515 may be further provided on the front panel 510. The front panel locking part 515 is provided to firmly mount the front panel 510 together with the front panel coupling part 513 to the front of the case 520.

The front panel locking part 515 is formed to protrude from one side of the front panel coupling part 513. The front panel locking part 515 is coupled to the fan cover 530 through a front panel locking groove 531b formed at the edge of the fan cover 530.

As an example, the front panel locking part 515 may be formed in a hook shape. The front panel locking part 515 may be fastened to the fan cover 530 in a hook manner. In the front panel coupling portion 513, a plurality of front panel locking portions 515 may be disposed at predetermined intervals.

[Structure of fan cover]

The fan cover 530 is accommodated in an accommodation space inside the case 520. The fan cover 530 is disposed between the front panel 510 and the fan assemblies 540 and 545 and between the front panel 510 and the battery 560. That is, the front panel 510 is disposed in front of the fan cover 530, and the fan assemblies 540 and 545 and the battery 560 are disposed behind the fan cover 530.

The fan cover 530 may be provided with a front panel coupling groove 531a into which the front panel 510 is inserted. As an example, the front panel coupling groove 531a may be formed such that the edge of the fan cover 530 is recessed inward. The coupling between the front panel 510 and the fan cover 530 may be achieved by fitting the front panel coupling portion 513 to the outside of the front panel coupling groove 531a.

In addition, the fan cover 530 may be provided with a front panel locking groove 531b coupled to the front panel locking portion 515 of the front panel 510. As an example, the front panel locking groove 531b may be formed by further recessing a portion of the front panel coupling groove 531a.

In the front panel locking groove 531b, the front panel locking portion 515 of the front panel 510 may be fastened in a hook manner. In the fan cover 530, a plurality of front panel locking grooves 531b may be respectively disposed at points corresponding to the front panel locking portions 515.

Meanwhile, the fan cover 530 may include an upper cover part 531 and a lower cover part 535. When the fan cover 530 is divided in the vertical direction, the upper region becomes the upper cover portion 531 and the lower region becomes the lower cover portion 535.

The upper cover part 531 is disposed in front of the fan assemblies 540 and 545. Air discharge parts 532 and 533 are provided in the upper cover part 531. The air discharge parts 532 and 533 are formed by penetrating or cutting a part of the upper cover part 531. The air discharge parts 532 and 533 form a passage on the fan cover 530 that connects the front of the case 520 and the blowing fans 541 and 546 of the fan assemblies 540 and 545.

In this embodiment, it is illustrated that the portable air purifier 50 is provided with two fan assemblies 540 and 545. That is, in the receiving space inside the case 520, the upper fan assembly 540 and the lower fan assembly 545 are arranged vertically.

Accordingly, the fan cover 530 is also provided with air discharge units 532 and 533 of two units. That is, in the upper cover part 531, the upper air discharge part 532 and the lower air discharge part 533 are arranged vertically.

Air passing through the upper fan assembly 540 is discharged forward through the upper air discharge unit 532, and the air passing through the lower fan assembly 545 is discharged forward through the lower air discharge unit 533 Can be.

As another example, the portable air purifier may be provided with one or three or more fan assemblies, and accordingly, one or three or more air discharge units may be provided on the fan cover.

In addition, a first fastening boss 531c is provided on the upper cover part 531. The first fastening boss 531c is formed to protrude rearward from the rear surface of the upper cover part 531. The first fastening boss 531c may be fitted and coupled to the fan assemblies 540 and 545. By coupling between the first fastening boss 531c and the fan assemblies 540 and 545, coupling between the fan cover 530 and the fan assemblies 540 and 545 may be achieved.

In addition, a second fastening boss 531d may be further provided on the upper cover part 531. The second fastening boss 531d is formed to protrude rearward from the rear surface of the upper cover part 531. The second fastening boss 531d may be fitted and coupled to the filter module 550. Since the second fastening boss 531d must be coupled to the filter module 550 disposed at the rear of the fan assemblies 540 and 545, it protrudes to a longer length than the first fastening boss 531c.

The lower cover part 535 is disposed under the upper cover part 531 provided with the air discharge parts 532 and 533. The lower cover part 535 is disposed in the second area B inside the case 520. In contrast, the upper cover part 531 is disposed in the first area A inside the case 520.

The lower cover part 535 is disposed in front of the battery 560. This lower cover part 535 shields the front of the battery 560 and supports the battery 560 from the front.

A third fastening boss 535a may be provided on the lower cover part 535. The third fastening boss 535a is formed to protrude rearward from the rear surface of the lower cover part 535. The third fastening boss 535a may be fitted and coupled to the filter module 550. That is, the second fastening boss 531d becomes a bonding point between the fan cover 530 and the filter module 550 in the first area A, and the third fastening boss 535a is the fan cover in the second area B. It becomes a coupling point between 530 and the filter module 550.

The fan cover 530 and the filter module 550 may be coupled to each other at a plurality of points by the upper second fastening boss 531d and the lower third fastening boss 535a. Accordingly, the coupling between the fan cover 530 and the filter module 550 may be made stronger and more stable. In addition, the fan assemblies 540 and 545 disposed between the fan cover 530 and the filter module 550 can also be stably fixed between the fan cover 530 and the filter module 550.

In addition, a fourth fastening boss 535b may be further provided on the lower cover part 535. The fourth fastening boss 535b is formed to protrude rearward from the rear surface of the lower cover part 535. The fourth fastening boss 535b may be fitted and coupled to the battery 560. By a fitting coupling made between the fourth fastening boss 535b and the battery 560, coupling between the fan cover 530 and the battery 560 may be achieved.

[Structure of fan assembly]

The portable air purifier 50 of the present embodiment includes fan assemblies 540 and 545 that suck air from the rear of the portable air purifier 50 and discharge air to the front.

The fan assemblies 540 and 545 are disposed between the fan cover 530 and the filter module 550. That is, the fan cover 530 is disposed in front of the fan assemblies 540 and 545, and the filter module 550 is disposed behind the fan assemblies 540 and 545.

These fan assemblies 540 and 545 are accommodated in an accommodation space inside the case 520 and are disposed in the first area A. Accordingly, the fan assemblies 540 and 545 are disposed at a position facing the rear surface of the upper cover part 531 of the upper cover part 531 and the lower cover part 535 of the fan cover 530.

In this embodiment, it is illustrated that the portable air purifier 50 is provided with two fan assemblies 540 and 545. According to this, the portable air purifier 50 is provided with an upper fan assembly 540 and a lower fan assembly 545.

The upper fan assembly 540 and the lower fan assembly 545 are disposed in the vertical direction. That is, the upper fan assembly 540 and the lower fan assembly 545 are disposed on the same vertical line.

In addition, the upper fan assembly 530 and the lower fan assembly 535 may be disposed to face the air discharge portions 532 and 533 formed in the fan cover 530. Accordingly, the air sucked into the upper fan assembly 540 and the lower fan assembly 545 through the rear panel 570 passes through the upper air discharge part 532 and the lower air discharge part 533, respectively, and then the front side It may be discharged forward through the panel 510.

In this embodiment, it is exemplified that the upper fan assembly 540 and the lower fan assembly 545 are formed in the same size and shape. However, differently, the upper fan assembly 540 and the lower fan assembly 545 may be formed in different sizes and shapes.

The upper fan assembly 540 and the lower fan assembly 545 include blowing fans 541 and 546, fan motors (not shown), and fan brackets 543 and 548, respectively.

Blowing fans 541 and 546 are provided to generate a flow of air. As an example, the blowing fans 541 and 546 may include an axial fan. Air sucked into the case 520 through the rear panel 570 may be sucked in the axial direction of the blowing fans 541 and 546 and then discharged in the axial direction of the blowing fans 541 and 546.

The fan motor is connected to the blowing fans 541 and 546 to apply rotational force to the blowing fans 541 and 546. Such a fan motor may include a BLDC motor capable of adjusting a frequency.

At least one of the blowing fans 541 and 546 and the fan motor is coupled to the fan brackets 543 and 548. Further, the fan brackets 543 and 548 are provided in a configuration for coupling the blowing fans 541 and 546 to the fan cover 530.

The fan brackets 543 and 548 are provided with openings 543a and 548a. The openings 543a and 548a form a passage for guiding air intake toward the blowing fans 541 and 546 and discharge of air from the blowing fans 541 and 546.

The openings 543a and 548a are formed to penetrate through the fan brackets 543 and 548 in a circular shape. Blowing fans 541 and 546 are inserted into the openings 543a and 548a. That is, the openings 543a and 548a provide a space for installation of the blowing fans 541 and 546 and a passage for guiding the air intake toward the blowing fans 541 and 546 and discharge of the air from the blowing fans 541 and 546. Form inside of.

Further, the fan brackets 543 and 548 may further include bracket fastening portions 543b and 548b. The bracket fastening portions 543b and 548b are provided as means for coupling the fan assemblies 540 and 545 to the fan cover 530.

The first fastening boss 531c provided on the upper cover part 531 of the fan cover 530 may be fitted to the bracket fastening parts 543b and 548b. In this way, the first fastening boss 531c and the bracket fastening parts 543b and 548b are fastened using a predetermined fastening member in a state in which the first fastening boss 531c and the bracket fastening parts 543b and 548b are fitted together. If so, the fan assemblies 540 and 545 and the fan cover 530 may be fastened.

[Structure of filter module]

The filter module 550 is disposed between the fan assemblies 540 and 545 and the rear panel 570. That is, fan assemblies 540 and 545 are disposed in front of the filter module 550, and a rear panel 570 is disposed behind the filter module 550.

* Such a filter module 550 is accommodated in an accommodation space inside the case 520 and is disposed in the first area A. Accordingly, the filter module 550 is disposed at a position facing the fan assemblies 540 and 545 among the fan assemblies 540 and 545 and the batteries 560 disposed under the fan assemblies 540 and 545. The filter module 550 may include a filter case 551 and a filter 559.

The filter case 551 forms an external skeleton of the filter module 550. The filter case 551 may include a case body portion 552 and fan cover coupling portions 553 and 554.

The case body portion 552 forms a skeleton of the filter case 551. In this embodiment, it is illustrated that the case body portion 552 is formed in a hexahedral shape with an open rear surface. An insertion space for accommodating the filter 559 is formed inside the case body 552. Further, the rear of the case body 552 is opened, and a passage through which the filter 559 is inserted into the insertion space inside the case body 552 is formed.

A filter 559 is mounted in the insertion space inside the case body 552. A seating groove or a seating protrusion may be provided on the inner side of the case body 552 so that the filter 559 can be firmly mounted inside the filter case 551.

In addition, the case body 552 is provided with a through hole 552a forming a passage between the insertion space and the fan assemblies 540 and 545. The through hole 552a is formed to penetrate the front and rear directions of the case body 552. The through hole 552a forms a passage for the air passing through the filter 559 to flow toward the blowing fans 541 and 546.

A plurality of through-holes 552a are provided on the front surface of the case body 552, and each through-hole 552a is formed to penetrate in the front and rear directions of the case body 552.

In this embodiment, a plurality of through-holes 552a are provided on the front surface of the case body 552, and each through-hole 552a is exemplified as being formed in a hexagonal shape. In addition, a plurality of through holes 552a are arranged in a honeycomb shape, and accordingly, a honeycomb structure may be formed on the front surface of the case body 552.

In this way, since the honeycomb structure is formed on the front surface of the case body 552, in addition to the purpose of securing a passage for air flow, goals such as securing rigidity and weight reduction of the filter case 551 can be achieved.

The fan cover coupling portions 553 and 554 include a first fan cover coupling portion 553 provided at an upper portion of the case body portion 552 and a second fan cover coupling portion 554 provided at a lower portion of the case body portion 552 It can be made, including.

The first fan cover coupling portion 553 is coupled to the second fastening boss 531d of the fan cover 530 at the upper portion of the case body portion 552. In addition, the second fan cover coupling portion 554 is coupled to the third fastening boss 535a of the fan cover 530 under the case body portion 552.

The second fastening boss 531d may be fitted to the first fan cover coupling portion 553. In addition, a third fastening boss 535a may be fitted to the second fan cover coupling portion 554. In the state where the first and second fan cover coupling portions 553 and 554 and the second and third fastening bosses 531d and 531a are fitted together, the first and second fan cover coupling portions using a predetermined fastening member When the (553, 554) and the second and third fastening bosses 531d and 531a are respectively fastened, the fan cover 530 and the filter module 550 may be fastened.

As described above, in the process in which the first and second fan cover coupling portions 553 and 554 and the second and third fastening bosses 531d and 531a are fastened by the fastening member, the fan cover 530 and the filter case 551 are They receive forces in directions that are close to each other. That is, the fan cover 530 receives a force to move the fan cover 530 to the rear, and receives a force to move the filter case 551 forward.

Accordingly, the fan cover 530 and the filter case 551 act to press the fan assemblies 540 and 545 disposed between the fan cover 530 and the filter module 550 from the front and the rear. Accordingly, the fan assemblies 540 and 545 can be firmly fixed between the fan cover 530 and the filter module 550 without a separate fastening operation.

That is, the fan cover 530 and the fan assemblies 540 and 545 and the filter case 551 may be fastened together by a fastening member used for fastening the fan cover 530 and the filter case 551. As a result, assembly of the fan cover 530, the fan assemblies 540 and 545, and the filter module 550 can be performed more easily and quickly.

In addition, a fan fastening boss 555 may be further provided in the filter case 551. The fan fastening boss 555 may be fitted to the bracket fastening portions 543b and 548b at the rear of the blowing fans 541 and 546.

According to this embodiment, the first fastening boss 531c is fitted to the bracket fastening portions 543b and 548b in the front of the blowing fans 541 and 546, and the fan fastening boss 555 is in the rear of the blowing fans 541 and 546. It is fitted to the bracket fastening parts (543b, 548b).

That is, the first fastening boss 531c and the fan fastening boss 555 are fitted to one of the bracket fastening portions 543b and 548b at both front and rear sides. As a result, the fan assemblies 540 and 545 are sandwiched between the fan cover 530 and the filter module 550 to be firmly fixed between the fan cover 530 and the filter module 550.

In addition, between the second fan cover coupling portion 554 and the third fastening boss 531a, a first coupling portion 562 provided on an upper portion of the battery 560 to be described later may be interposed. The second fan cover coupling portion 554 and the third fastening boss 531a may be coupled to each other with the first coupling portion 562 of the battery 560 interposed therebetween. Accordingly, the fan cover 530, the filter module 550, and the battery 560 can be coupled together in a single fastening operation using one fastening member.

In addition, the filter case 551 may further include a protruding support part 556. The protruding support portion 556 is formed to protrude from the case body portion 552. In this embodiment, it is illustrated that the protruding support portion 556 is formed to protrude upward from the upper end of the case body portion 552. This protruding support part 556 forms a plane protruding upward on the upper end of the case body part 552. At this time, the protruding support portion 556 is disposed on the rear side of the case body portion 552 and forms a plane parallel to the front surface of the case body portion 552.

In this protruding support part 556, a rear panel locking groove 555a is formed. The rear panel locking groove 555a is formed concave in the protruding support portion 556, and the rear of the rear panel locking groove 555a is opened toward the rear panel 570. The rear panel locking groove 555a is provided for coupling between the filter case 551 and the rear panel 570.

In addition, the filter case 551 may further include a sensor coupling unit 557. The sensor coupling part 557 is provided for coupling between the filter case 551 and the sensor module 600 to be described later.

In the portable air purifier 50, a filter for purifying air by filtering at least one of physical particles such as dust/fine dust/ultra-fine dust, chemical substances such as odor particles/hazardous gas, and microorganisms such as bacteria/viruses ( 559) is provided.

The filter 559 may be at least one of a dust collecting filter for filtering out physical particles such as dust, a deodorizing filter for filtering out chemical substances such as gas, or a sterilization filter for filtering microorganisms such as bacterial viruses.

The portable air purifier 50 may be equipped with a filter 559 including any one of the dust collecting filter, the deodorizing filter, and the sterilization filter. Accordingly, one of the dust collecting filter, the deodorizing filter, and the sterilization filter may be selectively used according to the user's preference. That is, the purpose or performance of the portable air purifier 50 may vary according to the selected filter type.

As an example, the dust collecting filter may include a high efficiency particulatae air filter. In addition, the deodorization filter may include a carbon filter. In addition, an ionizer may be included in the sterilization filter. However, the present invention is not limited thereto, and various types of filters may be included in the dust collection filter, the deodorization filter, and the sterilization filter.

The filter 559 may be inserted into the insertion space inside the filter case 551 through the open rear surface of the filter case 551. That is, the filter 559 may be detachably mounted on the filter case 551. According to the present embodiment, mounting of the filter 559 is completed simply by inserting the filter 559 inside the filter case 551, and the filter 559 is simply removed by removing the filter 559 from the filter case 551. ) Is removed. That is, the filter 559 can be easily and quickly installed or removed. In addition, since the filter 559 can be easily and quickly replaced when necessary, maintenance of the portable air purifier 50 is facilitated, and replacement of the filter type is facilitated if necessary.

[Battery structure]

The battery 560 may supply power for driving the portable air purifier 50. To this end, the battery 560 may be electrically connected to at least one of the fan assemblies 540 and 545, the sub PCB 590, the main PCB 595, and the filter module 550.

The battery 560 is accommodated in an accommodation space inside the case 520 and is disposed in the second area B. The second area B is an area disposed under the first area A in which the fan assemblies 540 and 545 and the filter module 550 are disposed. The upper boundary surface of the second region B may be defined by the fan assemblies 540 and 545 and the filter module 550, and the lower and side boundary surfaces of the second region B are the bottom surface 527 of the case 520 And may be defined by the side portion 521.

The battery 560 located in the second region B is disposed under the fan assemblies 540 and 545 and the filter module 550. In addition, the battery 560 is disposed between the fan cover 530 and the rear cover 580. That is, the fan assemblies 540 and 545 and the filter module 550 are disposed above the battery 560, and the lower cover part 535 of the fan cover 530 is disposed in front of the battery 560, and the battery 560 At the rear of the rear cover 580 is disposed.

The battery 560 may be provided with a first coupling portion 562 and a second coupling portion 563. The first coupling part 562 is provided for coupling between the battery 560 and the filter module 550. In addition, the second coupling portion 563 is provided for coupling between the battery 560 and the fan cover 530.

The first coupling part 562 is provided on the battery 560. The first coupling portion 562 may be coupled to the second fan cover coupling portion 554 by a fastening member in a state of being butted with the second fan cover coupling portion 554 of the filter case 551. By the coupling between the first coupling portion 562 and the second fan cover coupling portion 554 made as described above, coupling between the battery 560 and the filter module 550 may be achieved.

At this time, the first coupling portion 562 is disposed between the third fastening boss 535a of the fan cover 530 and the second fan cover coupling portion 554. This first coupling portion 562, the third fastening boss (535a) and the third fastening boss (535a) in a state in which the front side is butted with the third fastening boss (535a) and the rear side is butted with the second fan cover engagement portion 554. The first coupling portion 562 and the second fan cover coupling portion 554 may be coupled to the third fastening boss 535a and the second fan cover coupling portion 554 by a fastening member penetrating through the second fan cover coupling portion 554 at once. That is, the fan cover 530, the filter module 550, and the battery 560 may be coupled together with one fastening operation using one fastening member.

The fourth fastening boss 535b of the fan cover 530 may be fitted in the second coupling part. In a state in which the fourth fastening boss 535b is fitted in the second engagement portion 563, the second engagement portion 563 and the fourth fastening boss 535b may be coupled by a fastening member. By the coupling between the second coupling portion 563 and the fourth coupling boss 535b made as described above, coupling between the fan cover 530 and the battery 560 may be achieved.

In addition, a third coupling part 564 may be further provided in the battery 560. The third coupling part 564 is provided for coupling between the battery 560 and the rear cover 580.

[Structure of sub PCB and main PCB]

The portable air purifier 50 may further include a sub PCB 590 and a main PCB 595.

The sub PCB 590 includes a sub substrate 591, a power button 592 and an air volume control button 593 installed on the sub substrate 591. The power button 592 is provided as an operation button for turning on/off the power of the portable air purifier 50. In addition, the air volume control button 593 is provided as an operation button for increasing or decreasing the air volume of the portable air purifier 50. The sub PCB 590 is electrically connected to the main PCB 595 which will be described later.

The sub PCB 590 may be disposed at the top of the case 520. That is, the sub PCB 590 is disposed above the fan assemblies 540 and 545 and the filter module 550. The power button 592 and the air volume control button 593 installed in the sub-PCB 590 are external to the case 520 through a button through hole 523a provided in the upper surface 523 of the case 520. Is exposed as. The user can turn on/off the portable air purifier 50 or adjust the air volume of the portable air purifier 50 by manipulating the exposed buttons as described above.

In addition, the portable air purifier 50 may further include a main PCB 595 that manages the entire hardware module of the portable air purifier 50. The main PCB 595 may function as a control unit of the portable air purifier 50.

The main PCB 595 is disposed under the fan assemblies 540 and 545 in the receiving space inside the case 520. That is, the main PCB 595 is accommodated in the second area B inside the case 520 and may be disposed between the lower cover portion 535 of the fan cover 530 and the battery 560.

As an example, the main PCB 595 may be arranged in a form erected parallel to the lower cover part 535. The main PCB 595 may be supported on both sides in the front-rear direction by the lower cover part 535 and the battery 560 between the lower cover part 535 and the battery 560.

The main PCB 595 may include a main substrate 596 and a plurality of elements 597 installed on the main substrate 596. The main substrate 596 may be electrically connected to the fan assemblies 540 and 545, the battery 560, the sub PCB 590, and the sensor module 600. The main PCB 595 includes the upper fan assembly 530 and the lower fan assembly based on a command input through the power button 592 and the air volume control button 593 or data sensed through the sensor module 600. You can control the operation of 535.

In addition, the main PCB 595 may be electrically connected to the filter module 550. For example, when the filter 559 includes an ionizer, the main PCB 595 may be electrically connected to the ionizer, and power may be supplied to the ionizer. Alternatively, the filter 559 may be electrically connected to the battery 560 to receive power directly from the battery 560.

[Structure of rear panel]

The portable air purifier 50 includes a rear panel 570 disposed behind the case 520. As an example, the rear panel 570 may be formed of a plastic resin material.

The rear panel 570 is a portion in which external air is sucked into the portable air purifier 50. The rear panel 570 includes a plurality of first suction ports 570a. The plurality of first suction ports 570a may be formed by penetrating or cutting at least a portion of the rear panel 570. External air can be easily sucked into the interior of the portable air purifier 50 through the plurality of first suction ports 570a.

The rear panel 570 is disposed behind the case 520 to cover the open rear portion of the case 520. The rear panel 570 may include a flat portion 571 and an inclined surface portion 573.

The flat portion 571 is disposed in the center of the rear panel 570 in the lateral direction. The flat portion 571 is formed in a plane parallel to the front panel 510 and covers the open rear portion of the case 520. The flat portion 571 may be formed as a solid plane in the center of the rear panel 570, thereby contributing to the improvement of the rigidity of the rear panel 570.

The inclined surface portions 573 are disposed on both sides of the flat portion 571 in the lateral direction. The inclined surface portion 573 is formed as an inclined surface inclined toward the front side of the case 520 from the flat portion 571. At this time, it is preferable that the inclined surface portion 573 includes a curved shape convex to the rear. In addition, at least a portion of the first suction port 570a is disposed on the inclined surface portion 573.

In this embodiment, it is exemplified that most of the region of the first suction port 570a is disposed on the inclined surface portion 573. In addition, the plurality of first suction ports 570a are exemplified as being disposed at predetermined intervals in the vertical direction on the inclined surface portions 573 disposed on both sides of the rear panel 570.

As described above, as the first suction port 570a is disposed on the inclined surface portion 573, the first suction port 570a faces a direction between the rear and the side, not the rear or the side of the portable air purifier 50.

If the first suction port 570a is disposed toward the rear of the portable air purifier 50, the first suction port 570a is placed on the floor when the portable air purifier 50 is laid so that the rear panel 570 faces the floor. It becomes clogged. In this case, a phenomenon in which air intake into the portable air purifier 50 is not properly performed may occur.

However, if the first intake port 570a is disposed toward the side of the portable air purifier 50, the direction in which air is sucked into the portable air purifier 50 and the direction in which the air is discharged from the portable air purifier 50 are They form approximately right angles and are staggered. This causes an increase in flow path resistance inside the portable air purifier 50, and thus noise of the portable air purifier 50 may increase and a problem of deteriorating air purification performance may occur.

In consideration of this point, in the present embodiment, the first suction port 570a is disposed to face a direction between the rear and the side of the portable air purifier 50, not to the rear or side. Accordingly, even if the portable air purifier 50 is laid down in any direction, a space can be secured between the first suction port 570a and the floor. This makes it possible to secure a sufficient air intake path regardless of the state in which the portable air purifier 50 is laid down. In addition, since the first suction port 570a is disposed in a direction close to the rear of the portable air purifier 50, it is possible to eliminate a concern that noise increase and deterioration of air purification performance of the portable air purifier 50 may occur.

The rear panel 570 is coupled to the filter case 551 to cover the open rear portion of the case 520. A rear panel locking part 575 may be further provided on the rear panel 570. The rear panel locking part 575 is provided to firmly mount the rear panel 570 to the rear of the case 520.

The rear panel locking part 575 is formed to protrude from the upper end of the rear panel 570. The rear panel locking portion 575 is inserted into the rear panel locking groove 555a provided on the filter case 551 and is constrained to the filter case 551.

As an example, the rear panel locking part 575 may be formed in a hook shape. The rear panel locking part 575 may be fastened to the filter case 551 in a hook manner.

In addition, a rear cover coupling portion 578 may be further provided on the rear panel 570. The rear cover coupling portion 578 is provided at the lower end of the rear panel 570 facing the rear cover 580. The rear cover coupling portion 578 is provided for coupling between the rear panel 570 and the rear cover 580.

[Structure of rear cover]

The portable air purifier 50 of this embodiment may further include a rear cover 580 disposed at the rear of the case 520 and under the rear panel 570. As an example, the rear cover 580 may be formed of the same plastic resin material as the rear panel 570.

The rear cover 580 is disposed at the rear of the case 520 together with the rear panel 570 to cover the open rear portion of the case 520. That is, the open rear portion of the case 520 is covered by the upper rear panel 570 and the lower rear cover 580.

According to this embodiment, the rear panel 570 is configured to shield the rear of the first area A among the receiving spaces inside the case 520, and the rear cover 580 covers the rear of the second area B. It is a shielding configuration.

In the first area A, components related to suction, purification, and discharge of air are arranged. That is, the filter module 550 and the fan assemblies 540 and 545 are disposed in the first region A, and accordingly, the air flows in the first region A. Accordingly, the rear panel 570 is provided with a plurality of first suction ports 570a as a passage for inhaling air.

In the second region B, components that are not directly related to the flow of air for air purification are arranged. That is, in the second area B, the main PCB 595, the battery 560, and the sensor module 600 are disposed. The rear cover 580 covers the open rear of the space in which these components are arranged.

The rear cover 580 is formed in a shape similar to the rear panel 570. That is, when the rear panel 570 and the rear cover 580 are coupled to each other, the rear panel 570 and the rear cover 580 are provided to be recognized as one member.

Accordingly, the rear cover 580 may include a flat portion 581 and an inclined surface portion 583 similar to the rear panel 570. The flat portion 581 is disposed in the lateral center of the rear cover 580 and is formed in a plane parallel to the flat portion 571 of the rear panel 570.

The inclined surface portions 583 are disposed on both sides and lower sides of the flat portion 581 in the lateral direction. This inclined surface portion 583 is formed as an inclined surface inclined toward the front side of the case 520 from the flat portion 581.

In addition, the rear cover 580 may further include a horizontal surface portion 585. The horizontal surface portion 585 forms a horizontal plane on the upper end of the rear cover 580 facing the rear panel 570. That is, the rear surface of the rear cover 580 is formed by a flat portion 581, both sides and lower surfaces of the rear cover 580 are formed by an inclined surface portion 583, and the upper surface of the rear cover 580 is horizontally It is formed by the face portion 585.

In addition, a second suction port 580a may be provided in the rear cover 580. The second suction port 580a is formed to penetrate through the rear cover 580. The second suction port 580a forms a passage connecting the rear of the case 520 and the battery 560 and the sensor module 600. Through the second suction port 580a formed as described above, external air may flow into the battery 560 and the sensor module 600 in the second region B.

The rear cover 580 is provided separately from the rear panel 570 and is combined with the case 520 and the rear panel 570 to shield the rear of the battery 560. The rear cover 580 may further include a rear panel coupling portion 586 and a case coupling portion 587.

The rear panel coupling portion 586 is provided for coupling between the rear panel 570 and the rear cover 580. The rear panel coupling portion 586 is formed to protrude upward from the upper surface of the rear cover facing the rear panel 570, that is, the horizontal surface portion 585.

The rear panel coupling portion 586 is coupled to the controllers 680 and 577 provided at the lower end of the rear panel 570. By coupling between the rear panel coupling portion 586 and the rear cover coupling portion 578, the lower portion of the rear panel 570 is fixed. That is, the coupling between the rear panel locking portion 575 and the filter case 551 made at the upper portion of the rear panel 570 and the rear panel coupling portion 586 and the rear cover coupling portion 578 made at the lower portion of the rear panel 570 By coupling between, the rear panel 570 is stably fixed.

In this embodiment, between the rear panel coupling portion 586 and the rear cover coupling portion 578 in a form in which the protruding rear panel coupling portion 586 is fitted into the fitting groove formed on the inner side of the rear cover coupling portion 578. It is exemplified that the bonding takes place.

The case coupling part 587 is provided for coupling between the rear cover 580 and the case 520. The case coupling portion 587 is inserted into the rear cover coupling groove 520c provided in the rear lower portion of the case 520 and is constrained to the case 520.

As an example, the rear cover coupling groove 520c may be formed to penetrate the bottom portion 527 of the case 520 in the vertical direction. In addition, the case coupling portion 587 may be formed in a shape of a protrusion protruding downward from the lower surface of the rear cover 580.

By coupling between the case coupling portion 587 and the rear cover coupling groove 520c, the lower portion of the rear cover 580 may be fixed to the case 520. That is, an upper portion of the rear cover 580 may be fixed to the rear panel 570 and a lower portion of the rear cover 580 may be formed with a fixing structure of the rear cover 580 fixed to the case 520. Thereby, the rear cover 580 is stably fixed to the rear of the case 520, and the rear panel 570 and the rear cover 580 are fixed to support each other in a fixed state. Structure can be provided.

In addition, the rear cover 580 of the present embodiment may further include a battery latching part 588. The battery latching part 588 is provided for coupling between the rear cover 580 and the battery 560. The battery latching part 588 is disposed between the rear panel coupling part 586 on the upper side and the case coupling part 587 on the lower side. The battery engaging portion 588 is inserted into the third coupling portion 564 provided on the rear side of the battery 560 and is constrained to the battery 560.

In addition, the battery 560 may further include a fourth coupling unit 568. The fourth coupling part 568 is provided for coupling between the rear cover 580 and the battery 560 like the third coupling part 564. The fourth coupling part 568 is formed in the form of a structure protruding toward the rear cover 580 from the rear surface 561a of the battery case 561.

In addition, a fastening hole is formed so as to penetrate the inside of the fourth coupling portion 568 and the horizontal surface portion 585 of the rear cover 580 in the vertical direction. When the fourth coupling portion 568 and the horizontal portion 585 are fastened with a predetermined fastening member in a state in which the fastening holes of the fourth coupling portion 568 and the horizontal portion 585 overlap each other, the battery 560 and the rear cover Combinations between 580 may be made.

The battery 560 is a filter case 551 by coupling between the first coupling portion 562 and the second fan cover coupling portion 554 and coupling between the second coupling portion 563 and the fourth fastening boss 535b. And a state fixed to the fan cover 530. Therefore, when the battery latching part 588 is inserted into the third coupling part 564 and bound to the battery 560, the movement of the rear cover 580 is prevented so that the rear cover 580 is not separated to the rear of the case 520. Can be restrained.

That is, the upper part of the rear cover 580 is fixed to the rear panel 570, the lower part of the rear cover 580 is fixed to the case 520, and the upper and lower middle portions of the rear cover 580 are constrained by the battery 560. A fixing structure of the rear cover 580 is provided, whereby the fixing of the rear cover 580 can be made more stably.

[Structure of sensor module]

The portable air purifier 50 of this embodiment may further include a sensor module 600. The sensor module 600 is disposed in an accommodation space inside the case 520 and disposed in the second area B. This sensor module 600 is disposed between the battery 560 and the rear cover 580. That is, the battery 560 is disposed in front of the sensor module 600, and the rear cover 580 is disposed in the rear of the sensor module 600.

The sensor module 600 may include various sensors for sensing air quality around the portable air purifier 50 or in an indoor space in which the portable air purifier 50 is disposed. For example, the sensors may include a dust sensor, a gas sensor, and the like. The sensor module 600 may sense air quality using the sensors and transmit the sensed information to the main PCB 595 that manages the entire hardware module of the portable air purifier 50.

[Parts arrangement structure of portable air purifier]

FIG. 19 is an exploded perspective view showing a partial configuration of the portable air purifier shown in FIG. 18 by separating, FIG. 20 is a view showing a coupled state of the fan cover and case shown in FIG. 19, and FIG. 21 is shown in FIG. This is a diagram showing the installed state of the battery. In addition, FIG. 22 is a view showing a combined state of the fan cover and the rear cover shown in FIG. 21, and FIG. 23 is an enlarged view showing an enlarged "XXIII" portion of FIG. 18. In addition, FIG. 24 is a front view showing the front of the portable air purifier according to the second embodiment of the present invention, and FIG. 25 is a view showing the air flow pattern of the portable air purifier according to the second embodiment of the present invention, and FIG. 26 is a view showing a state in which a cup holder is mounted of the air purifier shown in FIG. 25.

First, referring to FIGS. 18 to 23, the receiving space inside the case 520 forming the skeleton of the portable air purifier 50 is divided into a first area (A) and a second area (B) above. .

In the first area A, components related to suction, purification, and discharge of air are arranged. That is, the filter module 550 and the fan assemblies 540 and 545 are disposed in the first region A, and accordingly, the air flows in the first region A. Accordingly, the rear panel 570 is provided with a plurality of first suction ports 570a as a passage for inhaling air. The fan cover 530 and the front panel 510 are provided with air discharge parts 532 and 533 and discharge ports 510a as passages for discharging the purified air in the first area A. Further, in the first region A, a flow path connecting the first suction port 570a, the air discharge parts 532 and 533, and the discharge port 510a is formed.

That is, in the first area A, a first suction port 570a, a filter module 550, fan assemblies 540 and 545, air discharge parts 532 and 533, and a discharge port 510a are provided, and into the portable air purifier 50. A flow path necessary for the sucked air to pass through the interior of the air purifier 50 is formed in the first region A.

In the second region B, components that are not directly related to the flow of air for air purification are arranged. That is, in the second area B, the main PCB 595, the battery 560, and the sensor module 600 are disposed. The rear cover 580 covers the open rear of the space in which these components are arranged.

According to this embodiment, the case 520 is formed in a shape of a hexahedron whose length in the vertical direction is longer than that in the lateral direction. In addition, the first region A disposed at the upper portion is formed to have a longer vertical length than the second region B disposed at the lower portion. That is, when the portable air purifier 50 is erected in the vertical direction, the upper first area A occupies a wider area in the case 520 than the lower second area B.

The lower cover part 535 of the fan cover 530 is disposed at the foremost of the second area B. The battery 560 is disposed in the second region B and disposed behind the lower cover part 535. The fan assemblies 540 and 545 and the filter module 550 are disposed above the battery 560, and a rear cover 580 is disposed behind the battery 560. In addition, a sensor module 600 may be disposed between the battery 560 and the rear cover 580.

That is, in the battery 560, the upper interface is defined by the fan assemblies 540 and 545 and the filter module 550, and the side and lower interface are defined by the side part 521 and the bottom part 527 of the case 520, and the rear The interface is accommodated in the space defined by the rear cover 580.

According to this embodiment, the battery 560 is provided with a heavier weight than the fan assemblies 540 and 545 and the filter module 550. Preferably, the battery 560 may be provided to have a weight heavier than the combined weight of the fan assemblies 540 and 545 and the filter module 550.

Typically, since the weight per unit volume of the battery 560 is much heavier than the weight per unit volume of the fan assemblies 540 and 545 and the filter module 550, even if the weight or size of the battery 560 is not artificially increased, the battery 560 ) Is not difficult to be provided with a heavier weight than the fan assemblies 540 and 545 and the filter module 550.

That is, even if the battery 560 of the capacity required for the normal use of the portable air purifier 50 is applied to the portable air purifier 50, the battery 560 is naturally more heavy than the fan assemblies 540 and 545 and the filter module 550. It can be prepared.

When the heavy battery 560 is disposed under the portable air purifier 50, the following effects may be provided.

First, when the heavy battery 560 is disposed under the portable air purifier 50, the center of gravity of the portable air purifier 50 is arranged to be biased from the center in the vertical direction to the lower side. That is, the center of gravity of the portable air purifier 50 is focused toward the lower side of the portable air purifier 50 in which the battery 560 is disposed.

In this way, when the center of gravity of the portable air purifier 50 is shifted toward the lower side of the portable air purifier 50 in which the battery 560 is disposed, the portable air purifier 50 is moved when the portable air purifier 50 is erected in the vertical direction. The risk of falling is lowered.

That is, when the portable air purifier 50 is erected in the vertical direction, the center of gravity of the portable air purifier 50 is located at the lower side due to the battery 560 disposed under the portable air purifier 50. The purifier 50 does not fall easily.

Meanwhile, according to the portable air purifier 50 of the present embodiment, as shown in FIG. 24, the bottom surface portion 527 of the case 520 forms a plane having a larger area than the upper surface portion 523. That is, the bottom surface portion 527 forms a plane having a lateral length longer than that of the top surface portion 523. That is, the lateral length of the bottom portion 527 is d _1, when the lateral length of the upper surface portion 523 to as d _2, is satisfied that d _1> d ₂ relationship. In addition, the second connection surface portion 529 connecting between the bottom surface portion 527 and the side portion 521 forms a curved surface having a smaller R value than the first connection surface portion 525.

The bottom portion 527 of the case 520 is a portion that contacts the bottom surface when the portable air purifier 50 is erected in the vertical direction. That is, the bottom portion 527 is a portion that supports the portable air purifier 50 so that the portable air purifier 50 can maintain an erect posture.

Since the bottom portion 527 of the case 520 forms a plane having a larger area than the top portion 523, the bottom portion 527 of the case 520 makes the portable air purifier 50 erected in the vertical direction more stable. Will be able to support it.

That is, a structure in which the battery 560 is disposed under the portable air purifier 50 so that the center of gravity of the portable air purifier 50 is located at the lower side, and a case supporting the portable air purifier 50 erected in the vertical direction ( The portable air purifier 50 erected in the vertical direction while effectively suppressing the occurrence of conduction of the portable air purifier 50 through the combination of the structure in which the bottom portion 527 of the 520 forms a plane with a larger area than the top portion 523. ) Will be able to maintain a stable posture.

Second, when the heavy battery 560 is disposed under the portable air purifier 50, other components constituting the portable air purifier 50, for example, the filter module 550 and the fan assemblies 540 and 545 560). That is, components related to intake, purification, and discharge of air must be disposed at a higher position than the battery 560.

In order to secure the charging capacity of the battery 560 required for smooth use of the portable air purifier 50, it is required that the size of the battery 560 be more than a certain size. Therefore, an installation space of a certain size or more for installing the battery 560 is required even inside the portable air purifier 50. In addition, since it is unreasonable to form a flow path for the flow of air in the space where the battery 560 is installed, the configurations related to the intake, purification, and discharge of air are higher than the location where the battery 560 is avoided. It has no choice but to be placed in a location.

With this arrangement structure, a flow path for suction, purification, and discharge of air in the portable air purifier 50 is formed in the first region A, which is a higher position than the battery 560, as shown in FIG. 25. . Accordingly, inhalation of air to the portable air purifier 50 and discharge of air purified by the portable air purifier 50 are also performed at a position higher than the position where the battery 560 is installed.

When the purified air is discharged from the top of the portable air purifier 50 as described above, it becomes easier for the air purified by the portable air purifier 50 to reach the user's face.

In order to increase the amount of air purified by the portable air purifier 50 reaching the user's face when placing and using the portable air purifier 50 on the floor at a position lower than the user's face, the portable air purifier 50 It is more advantageous to use it vertically than to lay it horizontally.

To this end, when the portable air purifier 50 is erected in the vertical direction, when the purified air is discharged from the top of the portable air purifier 50, the amount of air purified by the portable air purifier 50 reaches the user's face. Will increase further.

According to the present embodiment, since the battery 560 is disposed under the portable air purifier 50, the flow path for suction, purification, and discharge of air in the portable air purifier 50 is higher than the location where the battery 560 is installed. It is formed in a high position. As a result, the purified air is also discharged from the top of the portable air purifier 50, and accordingly, the amount of air purified by the portable air purifier 50 reaching the user's face can be further increased.

That is, through the structure in which the battery 560 is disposed under the portable air purifier 50, the structural stability of the portable air purifier 50 is improved so that the risk of conduction of the portable air purifier 50 erected in the vertical direction is lowered. , It is also possible to configure an efficient flow path to increase the amount of air purified by the portable air purifier 50 reaching the user's face.

Third, the heavy battery 560 is disposed under the portable air purifier 50, and accordingly, components related to intake, purification, and discharge of air are disposed at a higher position than the battery 560. It can also contribute to the expansion of the installation range of (50).

As an example, as shown in FIG. 26, when the portable air purifier 50 is used in a state in which the portable air purifier 50 is inserted into the cup holder h in the vehicle, the area in which air is sucked and the area where the purified air is discharged is the cup holder ( It is disposed at a higher position than h), and accordingly, the portable air purifier 50 can maintain a high level of air purification performance while being stably mounted in the vehicle. To this end, it is preferable that the vertical length of the second region B in which the battery 560 is disposed is set to be greater than or equal to the depth of the cup holder h.

As another example, if the lower area of the portable air purifier 50 is fixed using a clamp-type holder, etc., this also prevents the area in which the portable air purifier 50 inhales air and the area in which the purified air is discharged. It is possible to stably fix the portable air purifier 50 without having to.

That is, components that are not directly related to the flow of air for air purification, such as the battery 560, are arranged under the portable air purifier 50, and through the lower portion of the portable air purifier 50, the portable air purifier ( By allowing the mounting and fixing of 50) to be performed, it is possible to provide a high level of air purification performance and stable fixing of the portable air purifier 50 together.

[Detailed structure of sensor module]

FIG. 27 is an exploded perspective view showing the battery and sensor module of the portable air purifier according to the second embodiment of the present invention separated, and FIG. 28 is a cross-sectional view showing the internal structure of the sensor module shown in FIG. 27.

22 and 23 and 27 and 28, the portable air purifier 50 according to the present embodiment may further include a sensor module 600. The sensor module 600 is disposed in an accommodation space inside the case 520 and disposed in the second area B. The sensor module 600 is disposed between the battery 560 and the rear cover 580 and is installed at the rear of the battery 560.

In this embodiment, it is illustrated that the sensor module 600 includes a dust sensor 610. The dust sensor 610 may include a sensing case 611, a sensing unit 613, and a fan 615.

The sensing case 611 forms the exterior of the dust sensor 610, and the sensing unit 613 and the fan 615 are accommodated in the sensing case 611. The sensing case 611 is provided with an inlet port 611a and an exhaust port 611b.

The inlet 611a forms a passage through which air outside the dust sensor 610 flows into the sensing case 611. In addition, the exhaust port 611b forms a passage through which air introduced into the sensing case 611 is discharged to the outside of the sensing case 611. In this embodiment, it is exemplified that the inlet port 611a is disposed below the sensing unit 613 and the exhaust port 611b is disposed above the sensing unit 613.

The sensing unit 613 is accommodated in the sensing case 611. The sensing unit 613 may include a sensor that senses air quality introduced into the sensing case 611. For example, the sensing unit 613 may include at least one of a dust sensor and a gas sensor. The sensing unit 613 may sense air quality using sensors and transmit the sensed information to the main PCB 595 that manages the entire hardware module of the portable air purifier 50.

The fan 615 is accommodated in the sensing case 611 together with the sensing unit 613. In the fan 615, external air is introduced into the sensing case 611 through the inlet port 611a, and the air introduced into the sensing case 611 is transferred to the outside of the sensing case 611 through the exhaust port 611b. It is operated to create a discharged airflow.

When the above-described airflow is formed by the operation of the fan 615, air outside the portable air purifier flows into the second region B through the second inlet 580a. In addition, the air introduced into the second region B is introduced into the sensing case 611 through the inlet 611a.

Air introduced into the sensing case 611 passes through the sensing unit 613 accommodated in the sensing case 611, and the sensing unit 613 measures the air quality passing through the sensing unit 613 in this way. Will be detected. The air that has passed through the sensing unit 613 is discharged to the outside of the dust sensor 610 through the exhaust port 611b.

In this embodiment, the fan 615 is illustrated as being disposed between the sensing unit 613 and the exhaust port 611b. According to this, the air introduced into the sensing case 611 through the inlet 611a passes through the fan 615 only after passing through the sensing unit 613. That is, the air introduced into the dust sensor 610 passes through the sensing unit 613 before passing through the fan 615.

The concentration of dust or gas in the air introduced into the sensing case 611 may be changed while the air passes through the fan 615. This phenomenon may occur because dust attached to the fan 615 is mixed into the air or dust in the air is attached to the fan 615.

If the air introduced into the sensing case 611 passes through the fan 615 first before moving toward the sensing unit 613, the concentration of dust or gas between the external air and the air passing through the sensing unit 613 A difference occurs, which causes a decrease in the detection accuracy of the sensing unit 613.

In addition, if the fan 615 is disposed closer to the inlet 611a than the sensing unit 613, the sensing unit 613 must be disposed at a position farther from the inlet 611a. In this case, there is a possibility that the air introduced into the sensing case 611 is affected by the environment inside the sensing case 611, resulting in a difference in the concentration of dust or gas between the external air and the air passing through the sensing unit 613. Becomes higher. This also causes the detection accuracy of the sensing unit 613 to deteriorate.

In consideration of this point, in this embodiment, the fan 615 is disposed between the sensing unit 613 and the exhaust port 611b, and accordingly, the air introduced into the dust sensor 610 passes through the fan 615. Before doing so, the air flow passing through the sensing unit 613 is formed inside the dust sensor 610. Accordingly, the dust sensor 610 can provide a more accurate detection result.

[Combination structure between battery and sensor module and filter module]

FIG. 29 is an exploded perspective view showing a state before being combined between a filter module, a battery, and a sensor module of a portable air purifier according to a second embodiment of the present invention, and FIG. 30 is a combined state between the filter module and the battery and sensor module shown in FIG. 29 It is a drawing showing.

27 and 29, the battery 560 includes a battery case 561. The battery case 561 forms the exterior of the battery 560 and protects internal parts constituting the battery 560.

In this embodiment, the battery case 561 is illustrated as being formed in a hexahedral shape. The rear surface 561a of the battery case 561, that is, the surface facing the dust sensor 610 is formed in a plane. In addition, a mounting portion 565 is provided on the rear surface 561a of the battery case 561 formed in a flat shape as described above.

The mounting portion 565 is provided to regulate a coupling position between the dust sensor 610 and the battery 560. The mounting portion 565 may include a rear surface 561a of the battery case 561 and a first rib 566 and a second rib 567.

The rear surface 561a of the battery case 561, as a component constituting the mounting portion 565, is in contact with the dust sensor 610, more specifically the front surface of the sensing case 611, and moves the dust sensor 610 forward. To form a vertical support wall supported by

The first rib 566 is formed to protrude rearward from the rear surface 561a of the battery case 561. The mounting portion 565 is provided with a pair of first ribs 566, and the pair of first ribs 566 are disposed to be spaced apart from each other by a width corresponding to the width of the dust sensor 610. The pair of first ribs 566 are in contact with both side surfaces of the sensing case 611 and form vertical support walls that support the dust sensor 610 from the side.

The second rib 567 is formed to protrude rearward from the rear surface 561a of the battery case 561 and is disposed under the first rib 566. In this embodiment, it is illustrated that the second rib 567 is formed in the form of a protrusion protruding rearward from the lower portion of the first rib 566. This second rib 567 is disposed between the lower portion of the first rib 566 and between the pair of first ribs 566 when viewed from the rear. The second rib 567 provided as described above serves as a structure supporting the lower portion of the dust sensor 610 installed on the rear surface 561a of the battery case 561.

In addition, in the present embodiment, it is exemplified that a pair of second ribs 567 are disposed at a predetermined interval in the lateral direction at a lower portion between the pair of first ribs 566. However, the present invention is not limited thereto, and the mounting portion 565 may be provided with one second rib 567, or three or more second ribs 567 may be provided.

In addition, the second rib 567 may be provided in a form of forming a support wall in a horizontal direction connecting the lower portion of the first rib 566 in a horizontal direction instead of a protruding shape.

As described above, the mounting portion 565 includes a front longitudinal support wall formed by the rear surface 561a of the battery case 561, a lateral longitudinal support wall formed by a pair of first ribs 566, And it comprises a lower support structure formed by the second rib (567).

By the mounting portion 565 provided as described above, the coupling position between the dust sensor 610 and the battery 560 is regulated, and coupling between the dust sensor 610 and the battery 560 can be achieved.

When the dust sensor 610 is installed on the mounting part 565, the front surface of the dust sensor 610 abuts the rear surface 561a of the battery case 561, and both sides of the dust sensor 610 are first ribs 566. ) Is in contact with the inner side. In addition, the lower surface of the dust sensor 610 abuts against the inner surface of the second rib 567.

At this time, as the front surface of the dust sensor 610 abuts the rear surface 561a of the battery case 561, the position of the dust sensor 610 in the front and rear direction is regulated, and both sides of the dust sensor 610 have a first rib 566 The lateral position of the dust sensor 610 is regulated according to the contact with the inner surface of ). In addition, as the lower surface of the dust sensor 610 abuts the inner surface of the second rib 567, the vertical position of the dust sensor 610 is regulated.

In other words, the mounting portion 565 regulates the front-rear, lateral, and vertical coupling positions between the dust sensor 610 and the battery 560, so simply inserting the dust sensor 610 into the mounting portion 565 The coupling between the module 600 and the battery 560 can be made quickly and easily.

The mounting part 565 is integrally formed with the battery 560, more specifically, the battery case 561. According to this, the rear surface 561a of the battery case 561 of the configuration constituting the mounting portion 565 is itself a part of the battery case 561, and the first rib 566 and the second rib 567 are also a battery case. It is a structure formed integrally with 561.

That is, without adding a separate structure for coupling between the dust sensor 610 and the battery 560, such as a bracket, etc., the dust sensor 610 and the battery The combination between 560 is made.

Due to the characteristics of the portable air purifier 50 that must be portable, it is preferable that the portable air purifier 50 is designed to have as light weight and small size as possible. To this end, if the sizes of the fan assemblies 540 and 545 and the filter module 550 are reduced, the air purification performance is inevitably deteriorated. In addition, if the size of the battery 560 is reduced, the operating time of the portable air purifier 50 inevitably decreases.

That is, in order to provide the portable air purifier 50 which is small and light and has high air purification performance, a design is required to efficiently arrange the parts disposed in the case 520 in a narrow space.

To this end, in the present embodiment, a coupling between the dust sensor 610 and the battery 560 is made using the mounting portion 565 formed on the battery 560 itself. Accordingly, coupling between the dust sensor 610 and the battery 560 can be achieved without adding a separate structure for coupling between the dust sensor 610 and the battery 560 such as a bracket.

If a separate structure is to be added for the coupling between the dust sensor 610 and the battery 560, the size of the assembly of the dust sensor 610 and the battery 560 is bound to increase as much as the size occupied by the separate structure. Therefore, it is difficult to efficiently arrange both the sensor module 600 and the battery 560 in a narrow space in the case 120.

In particular, in order to increase the air purification performance of the portable air purifier 50, the configuration related to intake, purification, and discharge of air, that is, the larger the size of the fan assemblies 540 and 545 and the filter module 550, the more the sensor module 600 and the battery ( The space that can be secured in the case 520 for installation of the 560 is inevitably reduced by that amount.

However, if the size of the battery 560 is reduced, there is a problem that the operating time of the portable air purifier 50 is reduced by that amount, and it is not a desirable method to recklessly reduce the size of the dust sensor 610. This is because in the present embodiment, the fan 615 is provided inside the dust sensor 610, and considering the size of the fan 615, it is difficult to make a design to reduce the size of the dust sensor 610 easily.

In consideration of this point, in this embodiment, a combination between the dust sensor 610 and the battery 560 can be made without a separate structure for coupling between the dust sensor 610 and the battery 560, through which the battery ( The structure 560 and the dust sensor 610 were combined to reduce the size of the assembly.

That is, a separate structure for coupling between the dust sensor 610 and the battery 560 by allowing coupling between the dust sensor 610 and the battery 560 using the mounting portion 565 formed on the battery 560 itself The size of the assembly in which the battery 560 and the dust sensor 610 are combined can be reduced to the size to be occupied.

Accordingly, even without reducing the size of the battery 560 and the dust sensor 610, both the sensor module 600 and the battery 560 can be efficiently disposed in a narrow space within the case 520, so that a high level of air purification performance It is possible to provide a portable air purifier capable of providing a compact size while maintaining a compact size.

29 and 30, the dust sensor 610 is disposed at the rear of the battery 560, while the filter module 550, more specifically, is disposed under the filter case 551. The upper region of the dust sensor 610 protrudes above the battery case 561 to which the dust sensor 610 is coupled and is disposed in a space between the battery 560 and the filter case 551. That is, a part of the dust sensor 610 protrudes to the top of the battery 560, and the upper region of the dust sensor 610 protrudes in the filter case 551 at a distance such that it almost touches the filter case 551. It is close.

A sensor coupling part 557 is provided under the filter case 551 facing the dust sensor 610. The sensor coupling part 557 is disposed in the space between the battery 560 and the filter case 551 and is coupled to the upper region of the dust sensor 610.

The sensor coupling part 557 may be formed in the shape of a protrusion protruding downward from the lower surface of the filter case 551. A support surface for supporting the dust sensor 610 is formed in front of the dust sensor 610 on the rear surface of the sensor coupling part 557, that is, on the surface facing the upper region of the dust sensor 610. This support surface is formed in the same plane as the rear surface 561a of the battery case 561.

According to the present embodiment, most of the front area of the dust sensor 610 abuts the rear surface 561a of the battery case 561, and a partial area of the dust sensor 610 that does not contact the battery case 561, that is, The upper area of the dust sensor 610 protruding from the top of the battery case 561 comes into contact with a support surface formed on the rear surface of the sensor coupling part 557. That is, the rear surface 561a of the battery case 561 and the rear surface of the sensor coupling part 557 together serve as a support surface supporting the dust sensor 610 from the front.

The upper region of the dust sensor 610 and the sensor coupling part 557 may be fastened by a fastening member. Accordingly, coupling between the dust sensor 610 and the filter module 550 is made. The dust sensor 610 coupled with the filter module 550 as described above is fitted into the mounting portion 565 to form a coupling with the battery 560. In addition, the battery 560 is coupled to the filter module 550 through the coupling between the first coupling portion 562 and the second fan cover coupling portion 554.

That is, the coupling between the filter module 550 and the battery 560, the coupling between the battery 560 and the dust sensor 610, and the coupling between the dust sensor 610 and the filter module 550 are made together. By combining the filter module 550 and the battery 560 and the dust sensor 610 complementarily as described above, the coupling stability between the battery 560 and the dust sensor 610 may be further improved.

In addition, a pair of battery coupling units may be provided in the filter case 551. In this embodiment, it is exemplified that a pair of second fan cover coupling portions 554 serve as a pair of battery coupling portions. The pair of second fan cover coupling portions 554 are disposed to be spaced apart at predetermined intervals in the lateral direction. At this time, the pair of second fan cover coupling portions 554 are spaced apart by a distance longer than the length of the dust sensor 610 in the width direction. That is, when viewed from the rear, a pair of second fan cover coupling portions 554 are disposed on the outer side in the lateral direction of the dust sensor 610, respectively. In addition, a pair of first coupling portions 562 is also provided and disposed at a position corresponding to the second fan cover coupling portion 554.

Further, the sensor coupling portion 557 is disposed between the pair of second fan cover coupling portions 554. Accordingly, coupling between the first coupling portion 562 and the second fan cover coupling portion 554 and coupling between the upper region of the dust sensor 610 and the sensor coupling portion 557 are both performed together, but between these coupling portions It is possible to arrange the binding sites so that interference does not occur.

[Battery cooling structure]

23 and 28, a fan 615 is provided inside the dust sensor 610. In the fan 615, external air is introduced into the sensing case 611 through the inlet port 611a, and the air introduced into the sensing case 611 is transferred to the outside of the sensing case 611 through the exhaust port 611b. It is operated to create a discharged airflow.

When the above-described airflow is formed by the operation of the fan 615, air outside the portable air purifier flows into the second region B through the second inlet 580a. At this time, some of the air introduced into the second region B flows into the sensing case 611 through the inlet 611a, and the rest flows around the dust sensor 610 and the battery 560.

That is, by the operation of the fan 615 as described above, an airflow through which air passes through the inside of the dust sensor 610 and an airflow flowing around the dust sensor 610 and the battery 560 may be induced together.

Air flowing around the dust sensor 610 and the battery 560 may contact the battery 560. As described above, the air in contact with the battery 560 serves to cool the battery 560 generated during the operation of the portable air purifier.

In addition, the air introduced into the dust sensor 610 through the airflow passing through the dust sensor 610 is discharged to the outside of the dust sensor 610 through the exhaust port 611b. The air discharged to the outside of the dust sensor 610 may also come into contact with the battery 560, thereby allowing a cooling action of the battery 560 to occur.

That is, in order to efficiently place both the dust sensor 610 and the battery 560 in a narrow space inside the portable air purifier, the dust sensor 610 and the battery 560 are combined with each other by using the mounting part 565. , In addition to the effect of securing space for efficiently arranging both the dust sensor 610 and the battery 560, an effect of suppressing an excessive temperature rise of the battery 560 can be obtained together.

[Coupling structure between case and other components]

31 is a front perspective view showing a case according to a second embodiment of the present invention, and FIG. 32 is a rear perspective view showing a case according to the second embodiment of the present invention. In addition, FIG. 33 is a cross-sectional view taken along the line "XXXIII-XXXIII" in FIG. 14, and FIG. 34 is a schematic view showing a coupling structure between the fan cover and the case and the filter case shown in FIG. 33. In addition, FIG. 35 is a cross-sectional view taken along the line "XXXV-XXXV" of FIG. 14, FIG. 36 is a schematic view showing a coupling structure between the fan cover shown in FIG. 35 and the case and the filter case, and FIG. It is a cross-sectional view taken along the line XXXXXV-XXXXV".

In FIGS. 33 to 37, a state in which the front cover is separated or removed in the front of the portable air purifier is shown.

15, 17, 31, and 32, upper surface portions 523 and 522 and a second support surface 524 are provided on the case 520. As shown in FIG. The first supporting surface 522 is formed as a surface protruding from the inner circumferential surface of the case 520 and facing the fan cover 530 from the rear of the fan cover 530. In addition, the second support surface 524 protrudes from the inner circumferential surface of the case 520 and is formed as a surface facing the filter module 550 in front of the filter module 550.

According to this embodiment, in the front edge of the case 520, a step in which the inner side is concave toward the rear of the case 520 than the outer side is formed. The first supporting surface 522 is formed in a plane facing the fan cover 530 on the inside of the front edge of the case 520. That is, the first support surface 522 is formed on a rear concave surface of the front edge of the case 520, and is formed as a plane facing the rear surface of the fan cover 530.

The first supporting surface 522 interferes with the fan cover 530 and regulates the position of the fan cover 530. The first support surface 522 is formed in a plane facing the rear edge of the fan cover 530 and interferes with the rear edge of the fan cover 530 to regulate the position change of the fan cover 530 to the rear. I can.

In addition, the case 520 is provided with a support protrusion 520d protruding from the inner peripheral surface of the case 520 toward the inside of the case 520. The support protrusion 520d may be formed in a rod shape having a length that protrudes from the inner circumferential surface of the case 520 and extends in the front-rear direction. In the case 520, a plurality of support protrusions 520d are disposed at predetermined intervals along the circumferential direction of the case 520.

In addition, the second support surface 524 is formed in a plane facing the rear panel 570 at the rear end of the support protrusion 520d. At this time, the second supporting surface 524 is disposed at a position that is more inclined toward the inside of the case 520 than the first supporting surface 522.

The second support surface 524 interferes with the filter module 550 and regulates the position of the filter module 550. As an example, a protruding support part 556 is provided on an upper end of the filter case 551 of the filter module 550, and the protruding support part 556 forms a plane protruding upward from the upper end of the filter case 551. The second supporting surface 524 is formed in a plane facing the protruding support 556 and interferes with the protruding support 556 to regulate a change in the position of the filter module 550 to the front.

According to the present embodiment, the fan cover 530 and the filter module 550 are moved forward and backward with the first support surface 522 and the second support surface 524 provided on the case 520 as described above. They are coupled to each other, and by this coupling, the fan cover 530 and the filter module 550 are fixed to the case. Hereinafter, a coupling structure between the fan cover 530 and the filter module 550 formed with the first support surface 522 and the second support surface 524 therebetween will be described in detail.

17 and 31 to 37, a front panel 510 and a fan cover 530 are disposed in front of the first support surface 522. When the fan cover 530 is in close contact with the case 520 in front of the case 520, the rear edge of the fan cover 530 abuts the first support surface 522. That is, when the fan cover 530 is in close contact with the case 520 from the front of the case 520, the rear edge of the fan cover 530 interferes with the first support surface 522.

In this way, as the rear edge of the fan cover 530 interferes with the first support surface 522, a change in the position of the fan cover 530 to the rear is regulated. In addition, the front panel 510 may be coupled to the fan cover 530 installed in front of the case 520 as described above.

A filter case 551 is disposed behind the fan cover 530. According to this embodiment, most areas of the filter case 551 are disposed in front of the second supporting surface 524, but a partial area of the filter case 551, for example, the rear end of the filter case 551, is It is disposed behind the second supporting surface 524.

The filter case 551 is inserted into the case 520 from the rear of the case 520 and is coupled to the fan cover 530. At this time, most of the area of the filter case 551 is inserted so as to be disposed in front of the second support surface 524, but the rear end of the filter case 551 abuts the second support surface 524.

That is, when the filter case 551 is inserted from the rear of the case 520 into the case 520, the rear end of the filter module 550 interferes with the second support surface 524. In this way, as the rear end of the filter module 550 interferes with the second support surface 524, a change in the position of the filter module 550 to the rear is regulated.

According to this embodiment, in the case 520, a plurality of support protrusions 520d are disposed at predetermined intervals along the circumferential direction of the case 520. At this time, at least one of the plurality of support protrusions 520d is disposed on the upper side of the case 520.

In this embodiment, as shown in Figs. 17, 33, and 34, it is illustrated that a pair of support protrusions 520d are disposed on the upper side of the case 520. In addition, the protruding support portion 556 protruding from the upper end of the filter case 551 abuts on the second support surface 524 formed at the rear end of the support protrusions 520d.

That is, when the filter case 551 is inserted into the case 520 from the rear of the case 520, the protruding support portion 556 interferes with the second support surface 524. As the protruding support portion 556 interferes with the second support surface 524 in this way, a change in the position of the filter case 551 to the rear is restricted.

As described above, in a state in which the rear edge of the fan cover 530 interferes with the first support surface 522 and the protrusion support part 556 interferes with the second support surface 524, the fan cover 530 and the filter The cases 551 are coupled to each other.

The coupling between the fan cover 530 and the filter case 551 is a coupling between the first fan cover coupling portion 553 and the second coupling boss 531d, and the second fan cover coupling portion 554 and the third coupling boss. (535a) can be achieved by a combination. At this time, the coupling between the first fan cover coupling part 553 and the second fastening boss 531d, and the coupling between the second fan cover coupling part 554 and the third fastening boss 535a are made by a fastening member.

The fastening operation by the fastening member continues, so that the distance between the rear edge of the fan cover 530 and the protruding support part 556 of the filter case 551 is less than the distance between the first support surface 522 and the second support surface 524. When the coupling between the fan cover 530 and the filter case 551 is made to the extent that it becomes narrower, the rear edge of the fan cover 530 presses the first support surface 522, and the protrusion support part 556 is the second support surface. (524) is pressed.

That is, while the fan cover 530 and the filter case 551 are close to each other with the first support surface 522 and the second support surface 524 therebetween, the first support surface 522 and the second support surface 524 Is pressed from the front and rear respectively. Accordingly, the case 520 forms a combination of the fan cover 530 and the filter case 551, which are coupled by pressing the first support surface 522 and the second support surface 524 from the front and the rear, respectively.

As a result, the fan cover 530 and the filter case 551 are coupled at the same time, and the inside of the front rim of the case 520 and the support protrusion 520d between the fan cover 530 and the filter case 551 coupled to each other. As is inserted, the fan cover 530 and the filter case 551 and the case 520 are coupled to each other.

That is, only the combination between the fan cover 530 and the filter case 551 is made by interposing the first support surface 522 and the second support surface 524 in the case 520, and the fan cover 530 and the The filter case 551 may be coupled to each other so as not to be separated from the case 520. In other words, just by combining the fan cover 530 and the filter case 551 inside the case 520, the combination between the fan cover 530 and the filter module 550 and the case 520 is achieved at once. .

Meanwhile, in the filter case 551, as shown in FIGS. 17, 35, and 36, a rim protrusion 558 may be further provided. The rim protrusion 558 may be formed in a flange shape protruding laterally from the rear rim of the filter case 551.

According to this embodiment, the case body 552 of the filter case 551 does not interfere with the support protrusion 520d when the filter case 551 is inserted into the case 520 from the rear of the case 520. It is formed with a width that is not enough. For example, the width of the case body portion 552 is determined to be equal to or narrower than the distance between the pair of support protrusions 520d facing each other on the inner circumferential surface of the side portion 521 of the case 520.

And the rim protrusion 558 is formed to protrude laterally from the rear rim of the case body portion 552, and is formed to protrude by a length corresponding to the protruding length of each support protrusion 520d. The rim protrusion 558 may be formed as a plane facing the second supporting surface 524 and parallel to the second supporting surface 524.

Therefore, when the fan cover 530 and the filter case 551 are coupled, the second support surface 524 and the protruding support part 556 of the support protrusion 520d disposed on the upper surface 523 side of the case 520 ), as well as interference between the second support surface 524 and the rim protrusion 558 of the support protrusion 520d disposed on the side surface 521 side of the case 520.

That is, when the fan cover 530 and the filter case 551 are coupled, the fan cover 530 and the filter case 551 and the inner circumferential surface of the case 520 at the upper surface 523 side and both side surfaces 521 side The combination between the cases 520 is made. This is not a combination between the fan cover 530 and the filter case 551 and the case 520 only at a specific part where fastening by the fastening member is made, but the fan cover 530 over most of the inner circumferential surface of the case 520 ) And the case 520 and the filter case 551 and the case 520 are combined.

In this way, the coupling between the fan cover 530 and the case 520 and the coupling between the filter case 551 and the case 520 are made over most of the inner circumferential surface of the case 520, so that the impact applied to the case 520 is The inner circumferential surface of the case 520 may be distributed and transmitted to most areas.

That is, since the coupling portion between the fan cover 530 and the case 520 and the coupling portion between the filter case 551 and the case 520 are distributed to most of the inner circumferential surface of the case 520, the impact applied to the case 520 It can be widely distributed without being concentrated in any one of these areas.

Accordingly, even if an impact is applied to the portable air purifier 50, the impact applied to the portable air purifier 50 can be widely distributed without being concentrated in any one area.

In this way, by allowing the impact applied to the portable air purifier 50 to be widely distributed without being concentrated on any one area, the impact of the impact transmitted to the case 520 can be alleviated from being concentrated on a specific area. Accordingly, it is possible to reduce the risk of damage to a specific part where the case 520 and other parts are fastened.

That is, by adopting a structure that mitigates the concentration of the impact of the impact transmitted to the case 520 on a specific area, a specific area is not easily damaged due to the impact, and a portable air purifier 50 having high durability can be provided. .

In addition, in this embodiment, it is illustrated that the case 520 is formed of a metal material, more specifically, an aluminum material. The case 520 formed of an aluminum material is light and has high strength, so it is suitable to be applied to the portable air purifier 50, which must be light and easy to carry, and has sufficient rigidity to protect various parts accommodated in the case 520 Can have.

In addition, the case 520 formed of an aluminum material may contribute to the improvement of the appearance quality of the portable air purifier 50, such as having a smooth exterior surface and gloss compared to a case formed of a resin material.

In order to couple parts such as the fan cover 530 and the filter case 551 formed of a resin material to the case 520, a method using a fastening member is generally used. That is, a fastening operation between the fan cover 530 and other parts is performed by penetrating parts such as the fan cover 530 and the filter case 551 and the case 520 through a fastening member.

In order to proceed with the fastening operation using the fastening member as described above, a fastening hole must be formed in the case 520. However, due to the characteristics of the case 520 formed of an aluminum material having high strength, forming a fastening hole in the case 520 is a difficult operation that requires a lot of cost and time. That is, it takes a lot of cost and time to form the fastening hole in the case 520, and the difficulty of the operation is also very high.

In addition, in the structure in which the fastening member is fastened to the case 520 as described above, the fastening hole or the fastening member is inevitably exposed to the outside of the case 520. In this structure, the smooth exterior surface of the case 520 is damaged, and accordingly, the appearance quality of the portable air purifier 50 is inevitably deteriorated.

In consideration of this point, in this embodiment, the fan cover 530 and the filter case do not need to be fastened to the case 520, with the first support surface 522 and the second support surface 524 interposed therebetween. A coupling structure that can be coupled to each other so that the fan cover 530 and the filter case 551 are not separated from the case 520 is provided only by the coupling between the 551. That is, as long as the fan cover 530 and the filter case 551 are coupled inside the case 520, the fan cover 530 and the filter module 550 do not need to be coupled to the case 520 as a fastening member. The coupling between the cover 530 and the filter module 550 and the case 520 is achieved at once.

As a result, a portable air purifier 50 capable of maintaining a smooth and high appearance quality while reducing the time and cost required for fastening work between the case 520 and each component can be provided.

Meanwhile, in the rear of the case 520, the upper portion of the rear cover 580 is fixed to the rear panel 570, and the lower portion of the rear cover 580 is formed with a fixing structure of the rear cover 580 fixed to the case 520. Can be.

Thereby, the rear cover 580 is stably fixed to the rear of the case 520, and the rear panel 570 and the rear cover 580 are fixed to support each other in a fixed state. Structure can be provided.

The coupling between the rear cover 580 and the rear panel 570 is a coupling between the rear panel coupling portion 586 provided on the top of the rear cover 580 and the rear cover coupling portion 578 provided on the lower side of the rear panel 570 It can be done by And the coupling between the rear cover 580 and the case 520, the coupling between the case coupling portion 587 provided at the lower portion of the rear cover 580 and the rear cover coupling groove 520c provided at the rear lower portion of the case 520 Can be done.

In addition, referring to FIGS. 17 and 37, a structure is provided between the case 520 and the rear cover 580 for regulating a position change of the rear cover 580 to the front.

Accordingly, the support protrusion 520d is disposed inside the second region B of the case 520 or at the boundary between the first region A and the second region B, and in a region adjacent thereto. At this time, the support protrusion 520d is disposed on the inner circumferential surface of the side portion 521 of the case 520.

The second support surface 524 formed at the rear end of the support protrusion 520d arranged as described above may be formed as a plane facing the front edge of the rear cover 580. When the front edge of the rear cover 580 interferes with the second supporting surface 524, a change in the position of the rear cover 580 to the front is regulated.

The lower portion of the rear cover 580 is fixed by a coupling between the case coupling portion 587 and the rear cover coupling groove 520c. And by this coupling, the position in the front-rear direction of the lower part of the rear cover 580 is regulated.

In contrast, in the upper part of the rear cover 580, only the coupling between the rear cover 580 and the rear panel 570 is made by the coupling between the rear panel coupling portion 586 and the rear cover coupling portion 578, and the rear cover The coupling between 580 and the case 520 is not made.

In this embodiment, a structure is provided in which a position change of an upper portion of the rear cover 580 to the front is regulated by interference between the second supporting surface 524 and the front edge of the rear cover 580.

Accordingly, when the rear cover 580 is installed on the case 520, the position of the rear cover 580 in the front and rear direction can be regulated not only at the lower portion of the rear cover 580 but also at the upper portion of the rear cover 580.

This makes it possible to install the rear cover 580 while the installation position of the rear cover 580 is guided from the lower and upper portions of the rear cover 580 together, so that the installation work of the rear cover 580 is quick and easy. In addition to being made possible, the rear cover 580 installed on the case 520 can be stably fixed to the case 520 in the correct position.

[Detailed configuration of fan cover]

FIG. 38 is a front view showing a separate fan cover and a blowing fan of a portable air purifier according to a second embodiment of the present invention, FIG. 39 is an enlarged view showing the fan cover and the blowing fan, and FIG. 40 is a fan It is a side cross-sectional view showing the cover and the blowing fan.

15 and 38, air discharge parts 532 and 533 are provided in the fan cover 530. The air discharge parts 532 and 533 are formed by penetrating or cutting a part of the upper cover part 531. The air discharge parts 532 and 533 form a passage on the fan cover 530 that connects the front of the case 520 and the blowing fans 541 and 546 of the fan assemblies 540 and 545.

Further, fan assemblies 540 and 545 are disposed behind the air discharge units 532 and 533, and blowing fans 541 and 546 are provided in each of the fan assemblies 540 and 545, respectively. Blowing fans 541 and 546 are provided to generate a flow of air. As an example, the blowing fans 541 and 546 may include an axial fan. Air sucked into the case 520 through the rear panel 570 may be sucked in the axial direction of the blowing fans 541 and 546 and then discharged in the axial direction of the blowing fans 541 and 546.

The fan cover 530 of this embodiment may further include a shielding plate 530a and a guide vane 534. The shielding plate 530a and the guide vanes 534 are disposed in a region in which the air discharge portions 532 and 533 are formed. In this embodiment, it is exemplified that the shielding plate 530a and the guide vanes 534 are disposed on both the upper air discharge part 532 and the lower air discharge part 533.

The shielding plate 530a and guide vane 534 disposed on the upper air discharge part 532 and the shielding plate 530a and guide vane 534 disposed on the lower air discharge part 533 have the same configuration and function. Can be prepared. Therefore, in the following, only the shielding plate 530a and the guide vane 534 disposed on the upper air discharge part 532 will be described as a representative.

15 and 38 to 40, the blowing fan 541 may include a hub 542 and a fan blade 544.

The hub 542 is a portion that is coupled to a rotation shaft that becomes the rotation center of the blowing fan 541. The rotation shaft is rotated by a fan motor that imparts rotational force to the blowing fan 541. The hub 542 may be coupled to such a rotation axis and rotate around the rotation axis. This hub 542 is provided as a structure for connecting the fan blades 544 to the rotating shaft.

The fan blade 544 is connected to the radial circumference of the hub 542, that is, to the outer circumferential surface of the hub 542. The fan blade 544 may be rotated together with the hub 542 about a rotation axis. On the outer circumferential surface of the hub 542, a plurality of fan blades 544 are disposed along the rotational direction of the blowing fan 541.

The fan blades 544 are rotated together with the hub 542, and the air behind the blowing fan 541 is sucked into the blowing fan 541 by the fan blades 544 rotated in this way. The flow of air discharged to the front can be induced.

At this time, the front of the area in which the fan blades 544 rotate forms the blowing surface Sw, and the air volume of the blowing fan 541 may be increased or decreased in proportion to the speed of the wind passing through the blowing surface Sw. have.

A shielding plate 530a and a guide vane 534 are disposed on the discharge side of the blowing fan 541, in other words, in front of the blowing surface Sw.

The shielding plate 530a is disposed on the discharge side of the blowing fan 541. In this embodiment, the shielding plate 530a is disposed on the air discharge part 532, but is illustrated as being disposed at the central portion of the air discharge part 532. This shielding plate 530a is disposed in front of the hub 542 and serves to cover the hub 542.

The guide vanes 534 are disposed on the discharge side of the blowing fan 541. In this embodiment, the guide vane 534 is disposed on the air discharge unit 532, and is disposed between the inner circumferential surface of the fan cover 530 and the shielding plate 530a surrounding the air discharge unit 532 in the lateral direction. It is illustrated as being. This guide vane 534 extends radially about the rotation axis.

The guide vane 534 may serve as a connection structure for supporting the shield plate 530a disposed at the central portion of the air discharge unit 532 to the fan cover 530.

A shielding plate 530a is required to cover the hub 542 of the blowing fan 541, but in order to secure a passage for air discharged from the blowing fan 541, the shielding plate 530a is an air discharge part 532 Should not be completely covered. To this end, the shielding plate 530a is provided to have a size smaller than the air discharge part 532 so as to cover only a part of the air discharge part 532, and the guide vane between the inner circumferential surface of the fan cover 530 and the shielding plate 530a ( 534).

In addition, in addition to supporting the hub 542, the guide vane 534 may also serve to guide the discharge direction of air discharged from the blowing fan 541. This guide vane 534 is disposed in front of the blowing surface Sw, and is radially connected about the rotation axis.

According to this embodiment, the guide vane 534 may include a first guide surface 534a and a second guide surface 534b.

The first guide surface 534a is disposed adjacent to the blowing fan 541. The first guide surface 534a is formed in a planar shape facing the fan blade 544, and is formed in a planar shape facing the fan blade 544 obliquely. In other words, the first guide surface 534a is formed in a plane shape obliquely facing the blowing surface Sw.

The second guide surface 534b is disposed farther from the blowing fan 541 than the first guide surface 534a. The second guide surface 534b may be formed in a planar shape parallel to the first direction D1. Here, the first direction D1 is defined as an extension direction of the rotation shaft, that is, a front-rear direction.

The guide vane 534 is provided in a form in which the first guide surface 534a and the second guide surface 534b are connected. That is, the guide vane 534 has a first guide surface 534a formed in an inclined plane at a predetermined angle with the blowing surface Sw and a first guide surface 534a formed in a plane parallel to the first direction D1. ) Is provided in a connected form.

In this embodiment, it is exemplified that the blowing fan 541 includes a small axial-flow fan. Due to the characteristics of the portable air purifier 50 having a compact size in order to increase portability, there is a limit to increasing the size of the blowing fan 541. Therefore, in the portable air purifier 50 of this embodiment, a small axial fan is applied as the blowing fan 541.

However, the smaller the size of the axial fan, the lower the blowing performance of the axial fan is in general. There is also a method of applying an expensive axial fan, which is small and provides high blowing performance, as the blowing fan 541, but in this case, the manufacturing cost of the portable air purifier 50 increases more than necessary.

As a method of increasing the blowing performance of the portable air purifier 50 without using an expensive, high-performance axial fan, there is a method of concentrating the blowing direction of the portable air purifier 50. That is, the blowing direction of the portable air purifier 50 is concentrated to the front side.

An axial fan is a fan whose flow direction is parallel to the rotation axis of the blower, and sucks air from the rear and discharges air to the front. At this time, most of the air discharged to the front of the axial fan is discharged in a direction inclined outward in the radial direction of the axial fan. That is, most of the air discharged through the axial fan does not go straight forward of the portable air purifier 50 but spreads widely to the side of the portable air purifier 50.

This is because the force generated by the rotation of the axial fan, that is, the force generated in the rotational direction of the axial fan, is involved in the air discharge of the axial fan. That is, on the air discharged from the axial fan, in addition to the force that the axial fan pushes the air forward, a force generated in the rotational direction of the axial fan is also applied.

Accordingly, most of the air discharged through the axial fan does not go straight forward of the portable air purifier 50 but spreads widely to the side of the portable air purifier 50. In this way, when most of the air discharged through the axial fan is widely spread to the side of the portable air purifier 50, the front discharge range of the purified air discharged from the portable air purifier 50 is inevitably reduced.

Therefore, in order to increase the forward discharge range of the purified air discharged from the portable air purifier 50, it is preferable to guide the forward direction of the air discharged through the axial fan. That is, even if the lateral discharge width of the purified air discharged from the portable air purifier 50 is slightly narrowed, it is advantageous to increase the forward discharge range of the purified air to concentrate the forward direction of the air discharged through the axial fan. .

Due to the characteristics of the portable air purifier 50 used by the user, it can be said that the effect obtained by increasing the front discharge range of the purified air is greater than the effect due to the slightly narrowing of the lateral discharge width of the purified air. have. Therefore, it is required to design a structure capable of concentrating the direction of air discharged through the axial fan to the front.

According to this embodiment, a guide vane 534 is provided as a structure capable of concentrating the traveling direction of air discharged through the blowing fan 541 forward. And this guide vane 534 is provided on the fan cover 530.

In order to apply a structure such as the guide vane 534 to the fan assemblies 540 and 545 themselves, the entire fan assemblies 540 and 545 including the fan brackets 543 and 548 surrounding the blowing fan 541 must be redesigned.

In general, the fan assemblies 540 and 545 are not manufactured only for the portable air purifier 50, but are generally manufactured. This is because it is much more advantageous in terms of parts management and cost to use a general-purpose fan assembly rather than separately designing a fan assembly for the portable air purifier 50 only.

In contrast, the fan cover 530 is designed separately to be applied to the portable air purifier 50 of this embodiment. Therefore, in the design process of the fan cover 530, the guide vane 534 may be applied to the fan cover 530, and a large cost or time is not added thereto.

In addition, the fan cover 530 needs a structure for connecting the shielding plate 530a for covering the hub 542 of the blowing fan 541 to the fan cover 530. In consideration of this point, in the present embodiment, the shielding plate 530a disposed at the central portion of the air discharge unit 532 is supported by the fan cover 530 on the guide vane 534, in the blowing fan 541. A shape design is applied to guide the discharge direction of the discharged air.

Accordingly, a first guide surface 534a and a second guide surface 534b are formed on the guide vane 534, and the air discharged from the blowing fan 541 is the first guide surface 534a and the second guide surface. It is discharged to the front of the portable air purifier 50 through the area 534b is disposed.

[Guide vane configuration]

41 is a diagram showing a speed triangle showing a velocity component of air discharged through a blowing surface.

Hereinafter, the shapes of the first guide surface 534a and the second guide surface 534b will be described in more detail with reference to FIGS. 15 and 39 to 41.

15 and 39 to 41, the first guide surface 534a is formed as a plane forming a predetermined angle a with the blowing surface Sw. In addition, the second guide surface 534b is formed in a plane parallel to the first direction D1. At this time, the angle (a) formed by the first guide surface 534a and the blowing surface Sw satisfies the following relationship.

a=tan ^-1 (v _a /v _r )

Here, a is an angle between the first guide surface 534a and the blowing surface Sw, and v _a is a velocity vector in the first direction D1 among the velocity vectors of air discharged through the blowing surface Sw ( Hereinafter, it is referred to as "the first direction velocity vector"), and v _r is the radial direction of the blowing fan 541 (hereinafter referred to as "second direction" below D2) among the velocity vectors of the air passing through the blowing surface (Sw). It is a vector (hereinafter referred to as "second direction velocity vector").

And v _a and v _r can be determined through the following equation.

r=(r _o +r _i )/2

A=π(r _o ² -r _i ² )

v _a =Q/A

v _r =ω*r

Here, r is the distance from the rotation axis to the center of the fan blade 544, r ₁ is the radius of the hub 542, r _o is the radius of the blowing fan 541, and A is the area of the blowing surface Sw , Q is the air volume of the blowing fan 541, and ω is the angular speed of the blowing fan.

According to this, the first direction speed vector using information on the radius of the hub 542, the length of the fan blade 544, and the rotational speed of the blowing fan 541 that can be grasped through the specifications of the blowing fan 541 We can find out (v _a ) and the velocity vector in the second direction (v _{r ).}

And using the information on the first direction velocity vector (v _a ) and the second direction velocity vector (v _r ) identified as described above, the velocity vector (v) and the blowing surface of the air discharged through the blowing surface (Sw) are used. You can find out the angle between (Sw).

The air discharged from the blowing fan 541 first passes through an area in which the first guide surface 534a is disposed, and then passes through an area in which the second guide surface 534b is disposed. The second guide surface 534b is formed in a planar shape parallel to the first direction D1, and the air passing through the area in which the first guide surface 534a is disposed is flowed by the second guide surface 534b. Direction is guided.

Accordingly, in the process of flowing air along the second guide surface 534b forming a plane parallel to the first direction D1, the velocity vector in the first direction of the air flowing along the second guide surface 534b ( v _a ) is increased under the influence of the second guide surface 534b. Since the sum of the velocity vector in the first direction (v _a ) and the velocity vector in the second direction (v _r ), that is, the velocity vector v of air discharged through the blowing surface Sw, does not change, the velocity vector in the first direction v _{As a} ) increases, the second direction velocity vector (v _r ) decreases.

* As such, the increase in the first direction velocity vector (v _a ) and the decrease in the second direction velocity vector (v _r ) means that the direction of the velocity vector v of air discharged through the blowing surface (Sw) is It means that it changes in a direction closer to (D1).

_{That is, the second guide surface 534b increases the first direction speed vector (v a} ) of the air discharged from the blowing fan 541 and decreases the second direction speed vector (v _r ), so that the blowing fan 541 The discharge direction of the air discharged from is changed to the first direction D1, and through this, the moving direction of the purified air discharged from the portable air purifier 50 is concentrated to the front.

Accordingly, the air passing through the area in which the guide vanes 534 are disposed _{is increased in the first direction velocity vector (v a} ) and the second direction velocity vector (v _r ) decreases, resulting in a new velocity vector (V _x ). Air discharged with such a velocity vector (V _x ) may be discharged in a more concentrated forward direction than before passing through an area in which the guide vanes 534 are disposed. As a result, the portable air purifier 50 concentrates the air discharge direction forward and allows the purified air to reach a farther position.

If the above-described change in the flow direction of air proceeds rapidly, there is an increased risk of turbulence occurring in the process of air passing through the guide vanes 534.

In consideration of these points, in this embodiment, the first guide surface 534a is disposed between the second guide surface 534b and the blowing fan 541, and air entry into the second guide surface 534b is the first. It is guided by the guide surface 534a.

In order to allow the air discharged from the blowing fan 541 to pass through the second guide surface 534b without causing turbulence, the first guide surface 534a is parallel to the discharge direction of the air discharged from the blowing fan 541. It is preferable to form a plane of the direction.

To this end, it is necessary to determine the discharge direction of the air discharged from the blowing fan 541. The discharge direction of the air discharged from the blowing fan 541 may be expressed as an angle (a) formed by the direction in which the air discharged from the blowing fan 541 passes through the blowing surface Sw and the blowing surface Sw. have.

The inter-angle (a) may be determined using _{the first direction velocity vector (v a} ) and the second direction velocity vector (v _{r) calculated above.} In other words,

a=tan ^-1 (v _a /v _r )

The inter-angle (a) may be calculated by using the relationship.

And the first direction velocity vector (v _a ) and the second direction velocity vector (v _r ) are the radius of the hub 542, the length of the fan blade 544, which can be grasped through the specifications of the blowing fan 541, It may be calculated through information on the rotational speed of the blowing fan 541.

The angle (a) formed by the first guide surface 534a and the blowing surface Sw may be determined through the interposition angle (a) identified as described above. That is, the first guide surface 534a may be provided to form a plane in a direction parallel to the discharge direction of the air discharged from the blowing fan 541 based on the information on the angle a identified as described above. have.

In this embodiment, it is exemplified that the length of the first guide surface 534a and the length of the second guide surface 534b are the same. In order to allow the air discharged from the blowing fan 541 to pass through the second guide surface 534b without causing turbulence, the first guide surface 534a must be formed to have a sufficient length. Therefore, in this embodiment, the shape of the guide vane 534 is determined so that the length of the first guide surface 534a is at least the same length as the second guide surface 534b.

As the length of the second guide surface 534b increases, the first direction velocity vector v _a can be expected to increase further, and accordingly, the length of the first guide surface 534a must also increase. However, due to the characteristics of the portable air purifier 50, there is a limit to increasing the length of the guide vane 534. Accordingly, the length of the second guide surface 534b is determined as long as possible within the range of the length that the fan cover 530 can occupy, and the length of the first guide surface 534a may be determined in the same manner.

In addition, in order to avoid the occurrence of turbulence, between the first guide surface 534a and the second guide surface 534b connected inclined to each other, the end of the first guide surface 534a and the end of the second guide surface 534b have a curved shape. Is formed by

On the other hand, in the fan cover 530, a plurality of guide vanes 534 are disposed at predetermined intervals along the rotation direction of the blowing fan 541. Preferably, a plurality of guide vanes 534 may be disposed on the fan cover 530 to be spaced apart at equal intervals.

The guide vanes 534 arranged in this way not only can stably support the shielding plate 530a at a plurality of points, but also effectively guide the discharge direction of the air discharged from the blowing fan 541 at a plurality of points. I can.

Preferably, the number of guide vanes 534 is set to be greater than the number of fan blades 544. For example, if the number of fan blades 544 is 9, the number of guide vanes 534 is set to 11. Accordingly, there are more points at which the air discharge direction is guided by the guide vane 534 than at the point at which air is discharged by the blowing fan 541, so that the air discharge direction guidance action can be made more effectively.

In addition, the fan cover 530 of the present embodiment may be formed of a synthetic resin injection material. Since the fan cover 530 is not a structure that requires high strength, it is sufficient to be formed of a synthetic resin injection material that is easy to manufacture and is inexpensive. The fan cover 530 may be formed of a synthetic resin molded product in which an upper cover portion 531 and a lower cover portion 535, a shielding plate 530a, and a guide vane 534 are integrally injected.

As the thickness t of the guide vane 534 is thinner, the passage through which air can pass through the fan cover 530 is wider, so the thinner the thickness t of the guide vane 534 is. However, if the thickness t of the guide vane 534 is too thin, the strength of the guide vane 534 is weak and injection becomes difficult. In consideration of this point, the thickness t of the guide vane 534 is preferably set to 1 mm.

[Action and effect of guide vane]

FIG. 42 is a view showing a flow analysis result of an air purifier to which a guide vane is not applied, and FIG. 43 is a view showing a flow analysis result of a portable air purifier according to a second embodiment of the present invention. In addition, FIG. 44 is a graph showing the results of measuring the air volume of the air purifier to which the guide vanes are not applied and the air purifier according to the second embodiment of the present invention. A table showing the results of measuring the air volume of the air purifier according to the second embodiment.

42 and 44 show experimental results using a portable air purifier to which a guide vane is not applied to the fan cover. 43 and 45 show experimental results using a portable air purifier according to a second embodiment of the present invention, that is, a portable air purifier to which a guide vane is applied to a fan cover.

At this time, the radius (r _o ) of the blowing fan 541 is 29 mm, the radius (r _i ) of the hub is 16 mm, and the length (L) of the guide vane 534 is 5 mm. In FIGS. 42 and 43, the experiment was conducted under the condition that the rotation speed of the blowing fan 541 is 4500 RPM, and in FIGS. 44 and 45, the experiment was conducted under the condition that the rotation speed of the blowing fan 541 is 4500 RPM to 4900 RPM. In addition, the rest of the experimental conditions are the same except whether or not guide vanes are applied to the fan cover.

Hereinafter, the action and effect of the guide vane according to the present embodiment will be described with reference to FIGS. 15 and 39 to 45.

As a result of the experiment, the front discharge distance of the purified air discharged from the conventional air purifier was only about 60 mm (see FIG. 42), but it was confirmed that the forward discharge distance of the purified air discharged from the portable air purifier 50 of this embodiment reached about 150 mm. Became (see Fig. 43).

That is, it was confirmed that the portable air purifier 50 of the present embodiment can discharge purified air forward by about 2.5 times longer than that of the conventional air purifier. As a result, the first direction velocity vector (v _a ) of the air discharged from the blowing fan 541 is increased by the guide vane 534, and through this, the straightness of the purified air discharged from the portable air purifier 50 It is due to improvement. Through this, it can be seen that the guide vane 534 has had a significant effect on the improvement of the purified air discharge performance of the portable air purifier 50.

In addition, looking at the air volume of the conventional air purifier and the air volume measurement result of the portable air purifier of this embodiment with reference to FIGS. 44 and 45, when the rotational speed of the blowing fan is 4500 RPM, the air volume (O) of the conventional air purifier is measured as 12.2 CMH. The air volume (N) of the portable air purifier of this example was measured to be 13.5 CMH. That is, the air volume (N) of the portable air purifier of this embodiment was measured to be about 10% higher than that of the conventional air purifier (O).

In addition, when the rotational speed of the blower fan is 4900 RPM, the air volume (O) of the conventional air purifier was measured as 13.8 CMH, and the air volume (N) of the portable air purifier of this embodiment was measured as 16.1 CMH. That is, the air volume (N) of the portable air purifier of this embodiment was measured to be about 16% higher than the air volume (O) of the conventional air purifier.

According to the experimental results, the air volume (N) of the portable air purifier of the present embodiment was measured higher than the air volume (O) of the conventional air purifier under all conditions. These results show that the purified air discharge performance of the portable air purifier of the present embodiment is superior to that of the conventional air purifier.

In addition, as the rotational speed of the blowing fan increased, both the air volume (N) of the conventional air purifier and the air volume (N) of the portable air purifier of this embodiment increased, but the increase in the air volume (N) of the portable air purifier of this embodiment was larger. Able to know.

These results show that as the rotational speed of the blower fan increases, as the amount of air passing through the guide vanes increases, the guide vanes can help improve the purged air discharge performance of the portable air purifier.

As described above, the portable air purifier of the present embodiment having a guide vane improves the straightness of the purified air discharged forward using the guide vane, so that the amount of air purified by the portable air purifier reaches the user's face. It can be increased, and thereby further improved air purification performance can be provided.

In addition, since it is possible to provide more improved air discharge performance with an inexpensive general purpose fan instead of an expensive, high-performance fan, it is possible to provide a high-performance portable air purifier at low cost.

In addition, the portable air purifier according to the present embodiment may provide improved air purification performance while suppressing an increase in cost required for design and manufacturing by allowing the guide vanes to be applied to the fan cover together during the fan cover design process.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is only illustrative, and those of ordinary skill in the field to which the technology pertains, various modifications and other equivalent embodiments are possible. I will understand. Therefore, the true technical protection scope of the present invention should be determined by the following claims.

15: handle
20: inside the vehicle
21: Dashboard
30: sensor device
40: mobile terminal
50,60,70: Portable air purifier
510: front panel
510a: discharge port
513: front panel coupling part
515: front panel locking part
520: case
520a: front groove
520b: rear groove
520c: rear cover coupling groove
520d: support protrusion
521: side part
522: first support surface
523: upper surface
523a: button through hole
524: the second support surface
525: first connection surface portion
527: bottom part
529: second connection surface
530: fan cover
530a: shielding plate
531: upper cover part
531a: Front panel coupling groove
531b: front panel locking groove
531c: First signing boss
531d: 2nd signing boss
532: upper air discharge part
533: lower air discharge part
534: guide vane
534a: first guide surface
534b: second guide surface
535: lower cover part
535a: 3rd fastening boss
535b: 4th fastening boss
540: upper fan assembly
541.546: Blower fan
542: hub
543,548: Fan bracket
543a,548a: opening
543b,548b: Bracket connection part
544: Fan Blade
545: lower fan assembly
550: filter module
551: filter case
552: case body
552a: through hole
553: first fan cover coupling part
554: second fan cover coupling part
556: protruding support
555a: rear panel locking groove
556: battery coupling part
557: sensor coupling part
558: border protrusion
559: filter
560: battery
561: battery case
561a: back
562: first coupling part
563: second coupling portion
564: third coupling part
565: mounting part
566: first rib
567: second rib
568: fourth coupling part
570: rear panel
570a: first inlet
571: flat part
573: inclined surface
575: rear panel locking part
577: upper fitting part
579: upper fitting part
580: rear cover
580a: second inlet
581: flat part
583: inclined surface
585: horizontal section
586: rear panel coupling part
587: case coupling part
588: hook part
589: lower fitting part
590: Sub PCB
592: power button
593: wind direction control button
595: Main PCB
596: main board
597: element
600: sensor module
610: dust sensor
611: sensing case
611a: inlet
611b: exhaust port
613: sensing unit
615: fan

Claims (12)

A case having an accommodation space formed therein;
A fan assembly disposed inside the case and disposed at least two or more vertically;
A filter case coupled to the fan assembly and having a filter receiving portion formed thereon;
A filter accommodated in the filter receiving part to filter out foreign matter in the suction air;
A battery disposed under the fan assembly and the filter; And
Includes; a dust sensor disposed under the fan assembly and the filter and coupled to the battery,
The battery case forming the exterior of the battery is provided with a mounting portion on which the dust sensor is mounted,
The mounting portion,
A rear surface of the battery case facing the dust sensor; And
Portable air purifier comprising a rib extending from the rear surface to support the dust sensor. The method of claim 1, wherein the rib
First ribs respectively supporting lateral sides of the dust sensor; And
Portable air purifier comprising a; second rib supporting the lower portion of the dust sensor. The method of claim 2,
A portable air purifier in which a pair of the first ribs are spaced apart from each other so that the dust sensor can be accommodated between the pair of the first ribs. The method of claim 2,
The first rib and the second rib are portable air purifiers formed integrally with the battery case. The method of claim 2,
The first rib and the second rib are formed in a direction orthogonal to each other. The method of claim 2,
The first rib forms a vertical support wall supporting the dust sensor from the side,
The second rib is a portable air purifier protruding rearward from a lower portion of the first rib. The method of claim 2,
The first rib is a portable air purifier formed such that at least a portion of a side surface of the dust sensor facing the first rib is exposed to an outside of the first rib. The method of claim 2,
The portable air purifier
Portable air purifier further comprising a cover for accommodating the battery and the dust sensor. The method of claim 8,
The cover is a portable air purifier having an inlet corresponding to the inlet of the dust sensor. The method of claim 2, wherein the dust sensor,
A sensing case that forms an exterior of the dust sensor and includes an inlet through which external air is introduced and an exhaust port through which air introduced into the dust sensor is discharged;
A sensing unit provided inside the sensing case to detect air quality introduced into the sensing case; And
A portable air purifier comprising: a fan for generating flow so that the external air is introduced into the sensing case. The method of claim 10,
The fan is a portable air purifier disposed between the sensing unit and the exhaust port. The method of claim 1,
The battery has a first coupling portion protruding from the battery case,
The filter case is a portable air cleaner having a coupling portion coupled to the first coupling portion.

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